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#1 Le 03/04/2018, à 22:02

Crestey

Comment savoir vers quelle partition pointe grub ? (en Legacy)

Bonjour,
Pour résoudre proprement ce fil, j'aurais besoin de répondre à cette question dont l'énoncé est très simple, mais dont la résolution semble assez ardue. Il faut à priori scruter le boot loader et je n'ai pas les compétences pour faire ça. Le programme "boot-info" sait le faire.

Le but en final est de restaurer le grub maître s'il a été "délogé" par un autre OS avec les commandes
sudo mkdir /mnt/A
sudo mount /dev/sda6 /mnt/A
sudo grub-install --root-directory=/mnt/A/ --recheck /dev/sda

(Cet exemple restaure le Grub de sda6)

Donc le but final est de lancer un script à chaque shutdown de chaque OS ne contenant pas le grub maître.
Ce script ferait :
"Si Grub ne pointe pas vers sda6, alors restaure le grub de sda6" (sda6 pour l'exemple)

Dernière modification par Crestey (Le 04/04/2018, à 12:10)


Merci à tous.
Sous Ubuntu/XFCE depuis 2013. Ça fonctionne vraiment très bien.

Hors ligne

#2 Le 04/04/2018, à 09:55

Crestey

Re : Comment savoir vers quelle partition pointe grub ? (en Legacy)

ok merci j'ai rajouté dans le titre


Merci à tous.
Sous Ubuntu/XFCE depuis 2013. Ça fonctionne vraiment très bien.

Hors ligne

#3 Le 04/04/2018, à 11:46

??

Re : Comment savoir vers quelle partition pointe grub ? (en Legacy)

Bonjour

Cela vaut ce que ce que ça vaut. J'ai récupéré le script de boot-info. Je l'ai un peu élagué. J'en ai un peu bavé pour la sortie.
Il fonctionne dans un ordinateur EFi et un ordinateur legacy en version 16.04
Je te laisse l'adapter à tes besoins. (J'espère aussi que tu auras plus simple) Spécialement la sortie que je n'ai pas travaillée hormis mettre en français la séquence  par laquelle je passe.
J'aurais beaucoup aimé enlever la commande sudo mais, il en a besoin pour trouver la taille des disques afin de s'assurer que le programme embarqué est bien à l'intérieur...

u16041@u16041:~$ sudo ./MBR.sh FIC

Boot Info Script V0.00 info      [Boot-MBR 01 Avril 2018]
Liste des disques  /dev/sda /dev/sdb
Identifions les MBRs...
fin de traitement
Le resultat est dans le fichier "/home/u16041/FIC" 
 => Grub2 (v2.00) est installé dans le MBR de /dev/sda et pointe sur le 
    secteur 233323352 du même disque pour le fichier core.img. core.img est 
    à cet endroit et pointe sur (,gpt8)/boot/grub. il embarque aussi les 
    composants suivants:
    
    modules
    ---------------------------------------------------------------------------
    fshelp ext2 part_gpt biosdisk
    ---------------------------------------------------------------------------
 => Syslinux MBR (5.00 and higher) est installé dans le MBR de /dev/sdb.
u16041@u16041:~$ 

Le script en l'état

#!/bin/bash
VERSION='V0.00 info';
RELEASE_DATE='Boot-MBR 01 Avril 2018';
################################################################################
#                                                                              #
# Copyright (c) 2018     ??     FROM    /usr/share/boot-sav/b-i-s.             #
#                                                                              #
################################################################################

## Check if the script is run with bash as shell interpreter.
if [ -z "$BASH_VERSION" ] ; then
   echo 'Boot Info MBR Script needs to be run with bash as shell interpreter.' >&2;
   exit 1;
fi
help () {
   cat <<- HELP	
	Usage Boot Info Script:
	-----------------------	
	  Run the script as sudoer:	
	    sudo ${0} <outputfile>	
	  or if your operating system does not use sudo:	
	    su -
	    ${0} <outputfile>	
	  To get version number, release date, last git commit and git retrieval date
	  of this script, use (no root rights needed):
	    ${0} -v
	    ${0} -V
	    ${0} --version		
	  To get this help text, use (no root rights needed):	
	    ${0} -h
	    ${0} -help
	    ${0} --help			
	  Si aucun fichier de spécifié , le résultat sera imprimé dans  stdout et pas sauvé.	
	HELP
   exit 0;
}
  if [ -n "$1" ]
    then
     LogFile_cmd=$1
     stdout_output=0
    else
      stdout_output=1
      LogFile_cmd=stdout
  fi
##   LogFile=$(basename "${LogFile_cmd}")
LogFile=$HOME/$LogFile_cmd
rm $LogFile
touch $LogFile
chown "${SUDO_UID}:${SUDO_GID}" "${LogFile}"
chmod 770 "${LogFile}"
version () {
  printf '\nBoot Info MBR Script version: %s\nRelease date:             %s' "${VERSION}" "${RELEASE_DATE}";
}
## Display version number, release  ##
printf '\nBoot Info MBR Script %s      [%s]' "${VERSION}" "${RELEASE_DATE}";
echo ""
## Check whether Boot Info Script is run with root rights or not. ##
if [ $(type whoami > /dev/null 2>>$LogFile ; echo $?) -ne 0 ] ; then
   echo 'Please install "whoami" and run Boot Info Script again.' >&2;
exit 1;
elif [ $(whoami) != 'root' ] ; then
   cat <<- EOF >&2
	Please use "sudo" or become "root" to run this script.
	  Run the script as sudoer:
	    sudo ${0} <outputfile>
	  or if your operating system does not use sudo:
	    su -
	    ${0} <outputfile>
	For more info, see the help:
	    ${0} --help
	EOF
   exit 1;
fi
## Check if all necessary programs are available. ##
# Programs that are in /bin or /usr/bin.
Programs='
	basename
	cat
	chown
	dd
	dirname
	expr
	fold
	grep
	gzip
	hexdump
	ls
	mkdir
	mktemp
	mount
	printf
	pwd
	rm
	sed
	sort
	tr
	umount
	wc   '
# Programs that are in /usr/sbin or /sbin.
Programs_SBIN='
	blkid
	fdisk   '
Check_Prog=1;
for Program in ${Programs} ${Programs_SBIN}; do
  if [ $(type ${Program} > /dev/null 2>>$LogFile ; echo $?) -ne 0 ] ; then
     echo "\"${Program}\" could not be found." >&2;
     Check_Prog=0;
  fi
done
## Can we decompress a LZMA stream? ##    Cette sequence est obligatoire
#   The Grub2 (v1.99-2.00) core_dir string is contained in a LZMA stream.
#   See if we have xz or lzma installed to decompress the stream.
if [ $(type xz > /dev/null 2>>$LogFile ; echo $?) -eq 0 ] ; then
   UNLZMA='xz --format=lzma --decompress';
elif [ $(type lzma > /dev/null 2>>$LogFile; echo $?) -eq 0 ] ; then
   UNLZMA='lzma -cd';
else
   UNLZMA='none';
fi
# Do we have gawk or (a recent) mawk? ##
#
#   If we don't have gawk, look for "mawk v1.3.4" or newer.
#

if [ $(type gawk > /dev/null 2>>$LogFile ; echo $?) -eq 0 ] ; then
   # Set awk binary to gawk.
   AWK='gawk';
elif [ $(type mawk > /dev/null 2>>$LogFile ; echo $?) -eq 0 ] ; then
   MAWK_version="$(mawk -W version 2>>$LogFile)";
   MAWK_version="${MAWK_version:0:10}";

   if [ "${MAWK_version}" = 'mawk 1.3.3' ]; then
      printf '"mawk v1.3.3" has known bugs.\nInstall "mawk v1.3.4" or newer from http://invisible-island.net/mawk/ or use "gawk" instead.\n' >>$LogFile;
	  Check_Prog=0;
   else
      # Set awk binary to mawk (version 1.3.4 or higher).
      AWK='mawk';
   fi
else
   printf 'Install "gawk" or "mawk v1.3.4" (or newer) from http://invisible-island.net/mawk/.\n' >&2;
   Check_Prog=0;
fi
if [ ${Check_Prog} -eq 0 ] ; then
   printf '\nPlease install the missing program(s) and run Boot Info Script again.\n' >&2;
   exit 1;
fi
## List of folders which might contain files used for chainloading. ##
Boot_Codes_Dir='
	/
	'
## Redirect stdout to RESULT File ##
   exec 6>> "${LogFile}"
## Create temporary directory ##
Folder=$(mktemp -t -d BootInfo-XXXXXXXX);
## Create temporary filenames. ##
cd ${Folder}
Log=${Folder}/Log				# File to record the summary.
Log1=${Folder}/Log1				# Most of the information which is not part of
Error_Log=${Folder}/Error_Log			# File to catch all unusal Standar Errors.
Trash=${Folder}/Trash				# File to catch all usual Standard Errors these
Mount_Error=${Folder}/Mount_Error		# File to catch Mounting Errors.
Unknown_MBR=${Folder}/Unknown_MBR		# File to record all unknown MBR and Boot sectors.
Tmp_Log=${Folder}/Tmp_Log			# File to temporarily hold some information.
core_img_file=${Folder}/core_img		# File to temporarily store an embedded core.img of grub2.
core_img_file_unlzma=${Folder}/core_img_unlzma	# File to temporarily store the uncompressed part of core.img of grub2.
core_img_file_type_2=${Folder}/core_img_type_2	# File to temporarily store the core.img module of type 2
PartitionTable=${Folder}/PT			# File to store the Partition Table.
FakeHardDrives=${Folder}/FakeHD			# File to list devices which seem to have  no corresponding drive.
BLKID=${Folder}/BLKID				# File to store the output of blkid.
GRUB200_Module=${Folder}/GRUB200_Module		# File to store current grub2 module

## Redirect all standard error to the file Error_Log. ##
exec 2> ${Error_Log};
## List of all hard drives ##
#   Support more than 26 drives.
All_Hard_Drives=$(ls /dev/hd[a-z] /dev/hd[a-z][a-z] /dev/sd[a-z] /dev/sd[a-z][a-z] /dev/xvd[a-z] /dev/vd[a-z] /dev/vd[a-z][a-z] 2>> ${Trash});
echo "Liste des disques " $All_Hard_Drives
## Arrays to hold information about Partitions: ##
#   name, starting sector, ending sector, size in sector, partition type,
#   filesystem type, UUID, kind(Logical, Primary, Extended), harddrive,
#   boot flag,  parent (for logical partitions), label,
#   system(the partition id according the partition table),
#   the device associated with the partition.
declare -a NamesArray StartArray EndArray SizeArray TypeArray  FileArray UUIDArray KindArray DriveArray BootArray ParentArray LabelArray SystemArray DeviceArray;
## Arrays to hold information about the harddrives. ##
declare -a HDName FirstPartion LastPartition HDSize HDMBR HDHead HDTrack HDCylinder HDPT HDStart HDEnd HDUUID;
## Array for hard drives formatted as filesystem. ##
declare -a FilesystemDrives;
PI=-1;  ## Counter for the identification number of a partition.   (each partition gets unique number)   ##
HI=0;   ## Counter for the identification number of a hard drive.  (each hard drive gets unique number)  ##
PTFormat='%-10s %4s%14s%14s%14s %3s %s\n';	## standard format (hexdump) to use for partition table. ##

## Get total number of blocks on a device. ##  Cette fonction est nécessaire.
#   Sometimes "fdisk -s" seems to malfunction or isn't supported (busybox fdisk),
#   so use "sfdisk -s" if available.
#   If sfdisk isn't available, calculate the number of blocks from the number of
#   sectors (divide by 2).
fdisks () {
if [ $(type sfdisk >> ${Trash} 2>> ${Trash} ; echo $?) -eq 0 ] ; then
    sfdisk -s "$1" 2>> ${Trash};
  else
    # Calculate the number of blocks from the number of sectors (divide by 2).
    fdisk -lu "$1" 2>> ${Trash} | ${AWK} '$0 ~ /, .*, .*, .*/ { print $(NF - 1) / 2 }';
fi
}
##  A function which checks whether a file is on a mounted partition. ##
# List of mount points for devices: also allow mount points with spaces.
MountPoints=$(mount \
	      | ${AWK} -F "\t" '{ if ( ($1 ~ "^/dev") && ($3 != "/") ) { sub(" on ", "\t", $0); sub(" type ", "\t", $0); print $2 } }' \
	      | sort -u);
FileNotMounted () {	
  local File=$1 curmp=$2;
  IFS_OLD="${IFS}";  # Save original IFS.
  IFS=$'\012';       # Set IFS temporarily to newline only, so mount points with spaces can be processed too.
  for mp in ${MountPoints}; do 
    if [ $(expr match "${File}" "${mp}/" ) -ne 0 ] && [ "${mp}" != "${curmp}" ] ; then
       IFS="${IFS_OLD}";  # Restore original IFS.
       return 1;
    fi
  done
  IFS="${IFS_OLD}";       # Restore original IFS.
  return 0;
}

## Function which converts the two digit hexcode to the partition type. ##
#   The following list is taken from sfdisk -T and 
#   http://www.win.tue.nl/~aeb/partitions/partition_types-1.html
#   is work in progress.
HexToSystem () {
  local type=$1 system;
  case ${type} in
    0)  system='Empty';;
    1)  system='FAT12';;
    2)  system='XENIX root';;
    3)  system='XENIX /usr';;
    4)  system='FAT16 <32M';;
    5)  system='Extended';;
    6)  system='FAT16';;
    7)  system='NTFS / exFAT / HPFS';;
    8)  system='AIX bootable';;
    9)  system='AIX data';;
    a)  system='OS/2 Boot Manager';;
    b)  system='W95 FAT32';;
    c)  system='W95 FAT32 (LBA)';;
    e)  system='W95 FAT16 (LBA)';;
    f)  system='W95 Extended (LBA)';;
    10) system='OPUS';;
    11) system='Hidden FAT12';;
    12) system='Compaq diagnostics';;
    14) system='Hidden FAT16 < 32M';;
    16) system='Hidden FAT16';;
    17) system='Hidden NTFS / HPFS';;
    18) system='AST SmartSleep';;
    1b) system='Hidden W95 FAT32';;
    1c) system='Hidden W95 FAT32 (LBA)';;
    1e) system='Hidden W95 FAT16 (LBA)';;
    24) system='NEC DOS';;
    27) system='Hidden NTFS (Recovery Environment)';;
    2a) system='AtheOS File System';;
    2b) system='SyllableSecure';;
    32) system='NOS';;
    35) system='JFS on OS/2';;
    38) system='THEOS';;
    39) system='Plan 9';;
    3a) system='THEOS';;
    3b) system='THEOS Extended';;
    3c) system='PartitionMagic recovery';;
    3d) system='Hidden NetWare';;
    40) system='Venix 80286';;
    41) system='PPC PReP Boot';;
    42) system='SFS';;
    44) system='GoBack';;
    45) system='Boot-US boot manager';;
    4d) system='QNX4.x';;
    4e) system='QNX4.x 2nd part';;
    4f) system='QNX4.x 3rd part';;
    50) system='OnTrack DM';;
    51) system='OnTrack DM6 Aux1';;
    52) system='CP/M';;
    53) system='OnTrack DM6 Aux3';;
    54) system='OnTrack DM6 DDO';;
    55) system='EZ-Drive';;
    56) system='Golden Bow';;
    57) system='DrivePro';;
    5c) system='Priam Edisk';;
    61) system='SpeedStor';;
    63) system='GNU HURD or SysV';;
    64) system='Novell Netware 286';;
    65) system='Novell Netware 386';;
    70) system='DiskSecure Multi-Boot';;
    74) system='Scramdisk';;
    75) system='IBM PC/IX';;
    78) system='XOSL filesystem';;
    80) system='Old Minix';;
    81) system='Minix / old Linux';;
    82) system='Linux swap / Solaris';;
    83) system='Linux';;
    84) system='OS/2 hidden C: drive';;
    85) system='Linux extended';;
    86) system='NTFS volume set';;
    87) system='NTFS volume set';;
    88) system='Linux plaintext';;
    8a) system='Linux Kernel (AiR-BOOT)';;
    8d) system='Free FDISK hidden Primary FAT12';;
    8e) system='Linux LVM';;
    90) system='Free FDISK hidden Primary FAT16 <32M';;
    91) system='Free FDISK hidden Extended';;
    92) system='Free FDISK hidden Primary FAT16';;
    93) system='Amoeba/Accidently Hidden Linux';;
    94) system='Amoeba bad block table';;
    97) system='Free FDISK hidden Primary FAT32';;
    98) system='Free FDISK hidden Primary FAT32 (LBA)';;
    9a) system='Free FDISK hidden Primary FAT16 (LBA)';;
    9b) system='Free FDISK hidden Extended (LBA)';;
    9f) system='BSD/OS';;
    a0) system='IBM Thinkpad hibernation';;
    a1) system='Laptop hibernation';;
    a5) system='FreeBSD';;
    a6) system='OpenBSD';;
    a7) system='NeXTSTEP';;
    a8) system='Darwin UFS';;
    a9) system='NetBSD';;
    ab) system='Darwin boot';;
    af) system='HFS / HFS+';;
    b0) system='BootStar';;
    b1 | b3) system='SpeedStor / QNX Neutrino Power-Safe';;
    b2) system='QNX Neutrino Power-Safe';;
    b4 | b6) system='SpeedStor';; 
    b7) system='BSDI fs';;
    b8) system='BSDI swap';;
    bb) system='Boot Wizard hidden';;
    bc) system='Acronis BackUp';;
    be) system='Solaris boot';;
    bf) system='Solaris';;
    c0) system='CTOS';;
    c1) system='DRDOS / secured (FAT-12)';;
    c2) system='Hidden Linux (PowerBoot)';;
    c3) system='Hidden Linux Swap (PowerBoot)';;
    c4) system='DRDOS secured FAT16 < 32M';;
    c5) system='DRDOS secured Extended';;
    c6) system='DRDOS secured FAT16';;
    c7) system='Syrinx';;
    cb) system='DR-DOS secured FAT32 (CHS)';;
    cc) system='DR-DOS secured FAT32 (LBA)';;
    cd) system='CTOS Memdump?';;
    ce) system='DR-DOS FAT16X (LBA)';;
    cf) system='DR-DOS secured EXT DOS (LBA)';;
    d0) system='REAL/32 secure big partition';;
    da) system='Non-FS data / Powercopy Backup';;
    db) system='CP/M / CTOS / ...';;
    dd) system='Dell Media Direct';;
    de) system='Dell Utility';;
    df) system='BootIt';;
    e1) system='DOS access';;
    e3) system='DOS R/O';;
    e4) system='SpeedStor';;
    e8) system='LUKS';;
    eb) system='BeOS BFS';;
    ec) system='SkyOS';;
    ee) system='GPT';;
    ef) system='EFI (FAT-12/16/32)';;
    f0) system='Linux/PA-RISC boot';;
    f1) system='SpeedStor';;
    f2) system='DOS secondary';;
    f4) system='SpeedStor';;
    fb) system='VMware VMFS';;
    fc) system='VMware VMswap';;
    fd) system='Linux raid autodetect';;
    fe) system='LANstep';;
    ff) system='Xenix Bad Block Table';;
     *) system='Unknown';;
  esac
  echo "${system}";
}
UUIDToSystem () {
  local type=$1 system;
  case ${type} in
    00000000000000000000000000000000)  system='Unused entry';;
    41ee4d02e733d3119d690008c781f39f)  system='MBR partition scheme';;
    28732ac11ff8d211ba4b00a0c93ec93b)  system='EFI System partition';;
    4861682149646f6e744e656564454649)  system='BIOS Boot partition';;
    dee2bfd3af3ddf11ba40e3a556d89593)  system='Intel Fast Flash (iFFS) partition (for Intel Rapid Start technology)';;
    ## GUIDs that are not unique for one OS ##
    a2a0d0ebe5b9334487c068b6b72699c7)  system='Data partition (Windows/Linux)';;
    c38c896ad21db21199a6080020736631)  system='ZFS (Mac OS X) or /usr partition (Solaris)';;
    ## Windows GUIDs ##
    16e3c9e35c0bb84d817df92df00215ae)  system='Microsoft Reserved Partition (Windows)';;
    # Same GUID as old GUID for 'Basic data partition (Linux)'
  # a2a0d0ebe5b9334487c068b6b72699c7)  system='Basic data partition (Windows)';;
    aac808588f7ee04285d2e1e90434cfb3)  system='Logical Disk Manager (LDM) metadata partition (Windows)';;
    a0609baf3114624fbc683311714a69ad)  system='Logical Disk Manager (LDM) data partition (Windows)';;
    a4bb94ded106404da16abfd50179d6ac)  system='Windows Recovery Environment (Windows)';;
    90fcaf377def964e91c32d7ae055b174)  system='IBM General Parallel File System (GPFS) partition (Windows)';;
    ## HP-UX GUIDs ##
    1e4c8975eb3ad311b7c17b03a0000000)  system='Data partition (HP-UX)';;
    28e7a1e2e332d611a6827b03a0000000)  system='Service Partition (HP-UX)';;
    ## Linux GUIDs ##
    # Same GUID as 'Basic data partition (Windows)' GUID
  # a2a0d0ebe5b9334487c068b6b72699c7)  system='Data partition (Linux)';;
    # New GUID to avoid that Linux partitions show up as unformatted partitions in Windows.
    af3dc60f838472478e793d69d8477de4)  system='Data partition (Linux)';;  
    0f889da1fc053b4da006743f0f84911e)  system='RAID partition (Linux)';;
    6dfd5706aba4c44384e50933c84b4f4f)  system='Swap partition (Linux)';;
    79d3d6e607f5c244a23c238f2a3df928)  system='Logical Volume Manager (LVM) partition (Linux)';;
    3933a68d0700c060c436083ac8230908)  system='Reserved (Linux)';;
    ## FreeBSD GUIDs ##
    9d6bbd83417fdc11be0b001560b84f0f)  system='Boot partition (FreeBSD)';;
    b47c6e51cf6ed6118ff800022d09712b)  system='Data partition (FreeBSD)';;
    b57c6e51cf6ed6118ff800022d09712b)  system='Swap partition (FreeBSD)';;
    b67c6e51cf6ed6118ff800022d09712b)  system='Unix File System (UFS) partition (FreeBSD)';;
    b87c6e51cf6ed6118ff800022d09712b)  system='Vinum volume manager partition (FreeBSD)';;
    ba7c6e51cf6ed6118ff800022d09712b)  system='ZFS partition (FreeBSD)';;
    ## Mac OS X GUIDs ##
    005346480000aa11aa1100306543ecac)  system='Hierarchical File System Plus (HFS+) partition (Mac OS X)';;
    005346550000aa11aa1100306543ecac)  system='Apple UFS (Mac OS X)';;
  # c38c896ad21db21199a6080020736631)  system='ZFS (Mac OS X)';;
    444941520000aa11aa1100306543ecac)  system='Apple RAID partition (Mac OS X)';;
    444941524f5faa11aa1100306543ecac)  system='Apple RAID partition offline (Mac OS X)';;
    746f6f420000aa11aa1100306543ecac)  system='Apple Boot partition (Mac OS X)';;
    6562614c006caa11aa1100306543ecac)  system='Apple Label (Mac OS X)';;
    6f6365526576aa11aa1100306543ecac)  system='Apple TV Recovery partition (Mac OS X)';;
    726f74536761aa11aa1100306543ecac)  system='Apple Core Storage (i.e. Lion FileVault) partition (Mac OS X)';;
    ## Solaris GUIDs ##
    45cb826ad21db21199a6080020736631)  system='Boot partition (Solaris)';;
    4dcf856ad21db21199a6080020736631)  system='Root partition (Solaris)';;
    6fc4876ad21db21199a6080020736631)  system='Swap partition (Solaris)';;
    2b648b6ad21db21199a6080020736631)  system='Backup partition (Solaris)';;
  # c38c896ad21db21199a6080020736631)  system='/usr partition (Solaris)';;
    e9f28e6ad21db21199a6080020736631)  system='/var partition (Solaris)';;
    39ba906ad21db21199a6080020736631)  system='/home partition (Solaris)';;
    a583926ad21db21199a6080020736631)  system='Alternate sector (Solaris)';;
    3b5a946ad21db21199a6080020736631)  system='Reserved partition (Solaris)';;
    d130966ad21db21199a6080020736631)  system='Reserved partition (Solaris)';;
    6707986ad21db21199a6080020736631)  system='Reserved partition (Solaris)';;
    7f23966ad21db21199a6080020736631)  system='Reserved partition (Solaris)';;
    c72a8d6ad21db21199a6080020736631)  system='Reserved partition (Solaris)';;
    ## NetBSD GUIDs ##
    328df4490eb1dc11b99b0019d1879648)  system='Swap partition (NetBSD)';;
    5a8df4490eb1dc11b99b0019d1879648)  system='FFS partition (NetBSD)';;
    828df4490eb1dc11b99b0019d1879648)  system='LFS partition (NetBSD)';;
    aa8df4490eb1dc11b99b0019d1879648)  system='RAID partition (NetBSD)';;
    c419b52d0fb1dc11b99b0019d1879648)  system='Concatenated partition (NetBSD)';;
    ec19b52d0fb1dc11b99b0019d1879648)  system='Encrypted partition (NetBSD)';;
    ## ChromeOS GUIDs ##
    5d2a3afe324fa741b725accc3285a309)  system="ChromeOS kernel";;
    02e2b83c7e3bdd478a3c7ff2a13cfcec)  system="ChromeOS rootfs";;
    3d750a2e489eb0438337b15192cb1b5e)  system="ChromeOS future use";;
    ## Haiku GUIDs ##
    31534642a33bf110802a4861696b7521)  system='Haiku BFS (Haiku)';;
    ## MidnightBSD GUIDs ##
    5ee4d5857c23e111b4b3e89a8f7fc3a7)  system='Boot partition (MidnightBSD)';;
    5ae4d5857c23e111b4b3e89a8f7fc3a7)  system='Data partition (MidnightBSD)';;
    5be4d5857c23e111b4b3e89a8f7fc3a7)  system='Swap partition (MidnightBSD)';;
    8bef94037e23e111b4b3e89a8f7fc3a7)  system='Unix File System (UFS) partition (MidnightBSD)';;
    5ce4d5857c23e111b4b3e89a8f7fc3a7)  system='Vinum volume manager partition (MidnightBSD)';;
    5de4d5857c23e111b4b3e89a8f7fc3a7)  system='ZFS partition (MidnightBSD)';;
				   *)  system='-';
				       echo 'Unknown GPT Partiton Type' >> ${Unknown_MBR};
				       echo  ${type} >> ${Unknown_MBR};;   
  esac
  echo "${system}";
}
## Function which inserts a comma every third digit of a number. ##
InsertComma () {
  echo $1 | sed -e :a -e 's/\(.*[0-9]\)\([0-9]\{3\}\)/\1,\2/;ta';
}

## Read the Master Partition Table of BootIt NG. ##
#   Function arguments:
#   - arg 1: HI       = HI of hard drive
#   - arg 2: MPT_file = file for storing the MPT
ReadEMBR () {
  local HI=$1 MPT_file=$2 drive size N=0 i=0 BINGIndex label start end type format;
  local BINGUnknown system StoredPI FirstPI=${FirstPartition[$1]} LastPI=${PI} New;

  drive="${HDName[${HI}]}";
  format='%-18s %4s%14s%14s%14s %3s %-15s %3s %2s\n';
  printf "${format}" 'Partition' 'Boot' 'Start Sector' 'End Sector' '# of Sectors' 'Id' 'System' 'Ind' '?' >> ${MPT_file};
  N=$(hexdump -v -s 534 -n 1 -e '"%u"' ${drive});
  for (( i = 0;  i < N; i++ )) ; do
    New=1;
    BINGUnknown=$(hexdump -v -s $((541+28*${i})) -n 1 -e '"%x"' ${drive});
    start=$(      hexdump -v -s $((542+28*${i})) -n 4 -e '4 "%u"' ${drive});
    end=$(        hexdump -v -s $((546+28*${i})) -n 4 -e '4 "%u"' ${drive});
    BINGIndex=$(  hexdump -v -s $((550+28*${i})) -n 1 -e '"%u"' ${drive});
    type=$(       hexdump -v -s $((551+28*${i})) -n 1 -e '"%x"' ${drive});
    size=$((      ${end}-${start}+1));
    label=$(      hexdump -v -s $((552+28*${i})) -n 15 -e '"%_u"' ${drive}| sed -e 's/nul[^$]*//');
    system=$(     HexToSystem ${type});
    printf "${format}" "${label}" "-" "$(InsertComma ${start})" "$(InsertComma ${end})" "$(InsertComma ${size})" "${type}" "${system}" "${BINGIndex}" "${BINGUnknown}" >> ${MPT_file};
    StoredPI=${PI};
    for (( j = FirstPI; j <= LastPI; j++ )); do
      if (( ${StartArray[${j}]} == ${start} )) ; then 
	 PI=${j};
	 New=0;
	 break;
      fi
    done
    if [ ${New} -eq 1 ] ; then
       ((PI++));
       StoredPI=${PI};
       StartArray[${PI}]=${start};
       TypeArray[${PI}]=${type};
       SizeArray[${PI}]=${size};
       SystemArray[${PI}]=${system};
       EndArray[${PI}]=${end};
       DriveArray[${PI}]=${HI};
    fi
    NamesArray[${PI}]=${label};
     if ( [ ${type} = 'f' ] || [ ${type} = '5' ] ) ; then
       KindArray[${PI}]='E';
       ParentArray[${PI}]=${PI};
       ReadPT ${HI} ${start} 2 ${MPT_file} "${format}" ${PI} 4;  
    else
       KindArray[${PI}]='P';
       ParentArray[${PI}]='';
    fi
    PI=${StoredPI};
  done
}
## Syslinux ##
#   Determine the exact Syslinux version ("SYSLINUX - version - date"), display
#   the offset to the second stage, check the internal checksum (if not correct,
#   the ldlinux.sys file, probably moved), display the directory to which
#   Syslinux is installed.
syslinux_info () {
  local partition=$1;
  # Magic number used by Syslinux:
  local LDLINUX_MAGIC='fe02b23e';
  local LDLINUX_BSS LDLINUX_SECTOR2 ADV_2SECTORS;
  local sect1ptr0_offset sect1ptr0 sect1ptr1 tmp;
  local magic_offset syslinux_version syslinux_dir;
  # Patch area variables:
  local pa_version pa_size pa_hexdump_format pa_magic pa_instance pa_data_sectors;
  local pa_adv_sectors pa_dwords pa_checksum pa_maxtransfer pa_epaoffset;
  local pa_ldl_sectors pa_dir_inode;
  # Extended patch area variables:
  local epa_size epa_hexdump_format epa_advptroffset epa_diroffset epa_dirlen;
  local epa_subvoloffset epa_subvollen epa_secptroffset epa_secptrcnt;
  local epa_sect1ptr0 epa_sect1ptr1 epa_raidpatch epa_syslinuxbanner;
  # ADV magic numbers:
  local ADV_MAGIC_HEAD='a52f2d5a';		# Head signature
  local ADV_MAGIC_TAIL='64bf28dd';		# Tail signature
  local ADV_MAGIC_CHECKSUM=$((0xa3041767));	# Magic used for calculation ADV checksum
  # ADV variables:
  local ADVoffset ADV_calculated_checksum ADV_read_checksum ADVentry_offset;
  local tag='999' tag_len label;
  local csum;
  # Clear previous Syslinux message string.
  Syslinux_Msg='';
  # Read first 512 bytes of partition and convert to hex (ldlinux.bss)
  LDLINUX_BSS=$(hexdump -v -n512 -e '/1 "%02x"' ${partition});
  # Look for LDLINUX_MAGIC: bytes 504-507
  if [ "${LDLINUX_BSS:1008:8}" = "${LDLINUX_MAGIC}" ] ; then
     # Syslinux 4.04-pre5 and higher.
     pa_version=4;	 # Syslinux 4.xx patch area
     # The offset of Sect1Load in LDLINUX_BSS can be found by doing a
     # bitwise XOR of bytes 508-509 (little endian) with 0x1b << 9.
     # sect1ptr0_offset starts 2 bytes furter than Sect1Load.
     sect1ptr0_offset=$(( ( 0x${LDLINUX_BSS:1018:2}${LDLINUX_BSS:1016:2} ^ ( 0x1b << 9 ) ) + 2 ));
     # Get "boot sector offset" (in sectors) of sector 1 ptr LSW: sect1ptr0
     # Get "boot sector offset" (in sectors) of sector 1 ptr MSW: sect1ptr1
     eval $(hexdump -v -s ${sect1ptr0_offset} -n 10 -e '1/4 "sect1ptr0=%u; " 1/2 "tmp=%u; " 1/4 "sect1ptr1=%u;"' ${partition});
  else
     # Check if bytes 508-509 = "7f00".
     if [ "${LDLINUX_BSS:1016:4}" = '7f00' ] ; then
	# Syslinux 3.xx
	pa_version=3;	 # Syslinux 3.xx patch area
	# Get "boot sector offset" (in sectors) of sector 1 ptr LSW: sect1ptr0
	eval $(hexdump -v -s 504 -n 4 -e '1/4 "sect1ptr0=%u;"' ${partition});
     else
	# Syslinux 4.00 - Syslinux 4.04-pre4.
	pa_version=4;	 # Syslinux 4.xx patch area
	# Search for offset to sect1ptr0 (only found in Syslinux 4.xx)
	#   66 b8 xx xx xx xx 66 ba xx xx xx xx bb 00
	#         [sect1ptr0]       [sect1ptr1]
	#
	# Start searching for this hex string after the DOS superblock: byte 0x5a = 90
	eval $(echo ${LDLINUX_BSS:180:844} \
		| ${AWK} '{ mask_offset=match($0,"66b8........66ba........bb00"); \
		if (mask_offset == "0") { print "sect1ptr0_offset=0;" } \
		else { print "sect1ptr0_offset=" (mask_offset -1 ) / 2 + 2 + 90 } }');
	if [ ${sect1ptr0_offset} -ne 0 ] ; then
	   # Syslinux 4.00 - Syslinux 4.04-pre4.
	   # Get "boot sector offset" (in sectors) of sector 1 ptr LSW: sect1ptr0
	   # Get "boot sector offset" (in sectors) of sector 1 ptr MSW: sect1ptr1
	   eval $(hexdump -v -s ${sect1ptr0_offset} -n 10 -e '1/4 "sect1ptr0=%u; " 1/2 "tmp=%u; " 1/4 "sect1ptr1=%u;"' ${partition});
	else
	   Syslinux_Msg='No evidence that this is realy a Syslinux boot sector.';
	   return;
	fi
     fi
  fi
  Syslinux_Msg="Syslinux looks at sector ${sect1ptr0} of ${partition} for its second stage.";
  # Start reading 0.5MiB (more than enough) from second sector of the Syslinux
  # bootloader (= first sector of ldlinux.sys).
  dd if=${partition} of=${Tmp_Log} skip=${sect1ptr0} count=1000 bs=512 2>> ${Trash};
  # Get second sector of the Syslinux bootloader (= first sector of ldlinux.sys)
  # and convert to hex.
  LDLINUX_SECTOR2=$(hexdump -v -n 512 -e '/1 "%02x"' ${Tmp_Log});
  # Look for LDLINUX_MAGIC (8 bytes aligned) in sector 2 of the Syslinux bootloader.
  for (( magic_offset = $((0x10)); magic_offset < $((0x50)); magic_offset = magic_offset + 8 )); do
    if [ "${LDLINUX_SECTOR2:$(( ${magic_offset} * 2 )):8}" = ${LDLINUX_MAGIC} ] ; then
       if [ ${pa_version} -eq 4 ] ; then
	  # Syslinux 4.xx patch area.
	  # Patch area size: 4+4+2+2+4+4+2+2 = 4*4 + 4*2 = 24 bytes
	  pa_size='24';
	  # Get pa_magic, pa_instance, pa_data_sectors, pa_adv_sectors, pa_dwords, pa_checksum, pa_maxtransfer and pa_epaoffset.
	  pa_hexdump_format='1/4 "pa_magic=0x%04x; " 1/4 "pa_instance=0x%04x; " 1/2 "pa_data_sectors=%u; " 1/2 "pa_adv_sectors=%u; " 1/4 "pa_dwords=0x%u; " 1/4 "pa_checksum=0x%04x; " 1/2 "pa_maxtransfer=%u; " 1/2 "pa_epaoffset=%u;"';
	  eval $(hexdump -v -s ${magic_offset} -n ${pa_size} -e "${pa_hexdump_format}" ${Tmp_Log});
       else
	  # Syslinux 3.xx patch area.
	  # Patch area size: 4+4+2+2+4+4 = 4*4 + 2*2 = 20 bytes
	  pa_size='20';
	  # Get pa_magic, pa_instance, pa_dwords, pa_ldl_sectors and pa_checksum.
	  #  - pa_dwords:	Total dwords starting at ldlinux_sys not including ADVs.
	  #  - pa_ldl_sectors:	Number of sectors - (bootsec + sector2) but including any ADVs.
	  pa_hexdump_format='1/4 "pa_magic=0x%04x; " 1/4 "pa_instance=0x%04x; " 1/2 "pa_dwords=%u; " 1/2 "pa_ldl_sectors=%u; " 1/4 "pa_checksum=0x%04x; " 1/4 "pa_dir_inode=%u;"';
	  eval $(hexdump -v -s ${magic_offset} -n ${pa_size} -e "${pa_hexdump_format}" ${Tmp_Log});
	  # Calulate pa_data_sectors: number of sectors (not including ldlinux.bss = first sector of Syslinux).
	  #  - divide by 128 (128 dwords / 512 byte sector)
	  pa_data_sectors=$(( ${pa_dwords} / 128 ));
	  # If total dwords is not exactly a multiple of 128, round up the number of sectors (add 1).
	  if [ $(( ${pa_dwords}%128 )) -ne 0 ] ; then
	     pa_data_sectors=$(( ${pa_data_sectors} + 1 ));
	  fi
	  # Some Syslinux 4.00-pre?? releases are different:
	  #  - have Syslinux 3.xx signature: bytes 508-509 = "7f00".
	  #  - have the "boot sector offset" (in sectors) of sector 1 ptr LSW (bytes 504-507)
	  #    for sect1ptr0, like Syslinux 3.xx.
	  #  - have like Syslinux 4.xx, the same location for pa_data_sectors.
	  # If pa_dwords is less than 1024, it contains the value of pa_data_sectors:
	  #  - if less and pa_words would really be pa_words:		ldlinux.sys would be smaller than 4 kiB
	  #  - if more and pa_words would really be pa_data_sectors:	ldlinux.sys would be more than 500 kiB
	  if [ ${pa_dwords} -lt 1024 ] ; then
	     pa_data_sectors=${pa_dwords};
	  fi
       fi       
       # Get the "SYSLINUX - version - date" string.
       syslinux_version=$(hexdump -v -e '"%_p"' -s 2 -n $(( ${magic_offset} - 2 )) ${Tmp_Log});
       syslinux_version="${syslinux_version% \.*}";
       # Overwrite the "boot sector type" variable, which was set before calling this function,
       # with a more exact Syslinux version number.
       BST="${syslinux_version}";
       # Check integrity of Syslinux:
       #  - Checksum starting at ldlinux.sys, stopping before the ADV part.
       #  - checksum start = LDLINUX_MAGIC - [sum of dwords].
       #  - add each dword to the checksum value.
       #  - the value of the checksum after adding all dwords of ldlinux.sys should be 0.
       csum=$(hexdump -v -n $(( ${pa_data_sectors} * 512)) -e '/4 "%u\n"' ${Tmp_Log} \
	    | ${AWK} 'BEGIN { csum=4294967296-1051853566 } { csum=(csum + $1)%4294967296 } END {print csum}' );
       if [ ${csum} -ne 0 ] ; then
	  Syslinux_Msg="${Syslinux_Msg} The integrity check of Syslinux failed.";
	  return;
       fi
       if [ ${pa_version} -eq 4 ] ; then
	  # Extended patch area size: 11*2 = 22 bytes
	  epa_size='22';
	  # Get epa_advptroffset, epa_diroffset, epa_dirlen, epa_subvoloffset, epa_subvollen,
	  # epa_secptroffset, epa_secptrcnt, epa_sect1ptr0, epa_sect1ptr1 and epa_raidpatch.
	  epa_hexdump_format='1/2 "epa_advptroffset=%u; " 1/2 "epa_diroffset=%u; " 1/2 "epa_dirlen=%u; " 1/2 "epa_subvoloffset=%u; " 1/2 "epa_subvollen=%u; " 1/2 "epa_secptroffset=%u; " 1/2 "epa_secptrcnt=%u; " 1/2 "epa_sect1ptr0=%u; " 1/2 "epa_sect1ptr1=%u; " 1/2 "epa_raidpatch=%u; " 1/2 "epa_syslinuxbanner=%u;"';
	  eval $(hexdump -v -s ${pa_epaoffset} -n ${epa_size} -e "${epa_hexdump_format}" ${Tmp_Log});
	  # Get the Syslinux install directory.
	  syslinux_dir=$(hexdump -v -e '"%_p"' -s ${epa_diroffset} -n ${epa_dirlen} ${Tmp_Log});
	  syslinux_dir=${syslinux_dir%%\.*};
	  Syslinux_Msg="${Syslinux_Msg} ${syslinux_version:0:8} is installed in the ${syslinux_dir} directory.";
	  # In Syslinux 4.04 and higher, the whole Syslinux banner is not in the first sector of ldlinux.sys.
	  # Only the "SYSLINUX - version" string is still located in the first sector.
	  # epa_syslinuxbanner points to the whole "SYSLINUX - version - date" string.

	  if [ ${epa_syslinuxbanner} -lt $(( ${pa_data_sectors} * 512 )) ] ; then
	     # Get the "SYSLINUX - version - date" string.
	     tmp=$(hexdump -v -e '"%_p"' -s $(( ${epa_syslinuxbanner} + 2 )) -n 100 ${Tmp_Log});
	     # Check if we have Syslinux 4.04 or higher, which suppport the epa_syslinuxbanner field
	     # by comparing the first 8 bytes ("SYSLINUX") of the Syslinux banner from sector 1 with
	     # the 8 bytes to which epa_syslinuxbanner points.
	     if [ x"${tmp:0:8}" = x"${syslinux_version:0:8}" ] ; then
	        syslinux_version="${tmp%%\.No DEFAULT*}";
	        # Overwrite the "boot sector type" variable, which was set before calling this function,
	        # with a more exact Syslinux version number.
	        BST="${syslinux_version}";
	     fi
	  fi

	  # ADV stuff starts here.
	  if [ ${pa_adv_sectors} -ne 2 ] ; then
	     Syslinux_Msg="${Syslinux_Msg} There are ${pa_adv_sectors} ADV sectors instead of 2.";
	     return;
	  fi
	  # Get the ADV offset.
	  ADVoffset=$(( pa_data_sectors * 512 ));
	  # Get the ADV.
	  ADV_2SECTORS=$(hexdump -v -s ${ADVoffset} -n 1024 -e '/1 "%02x"' ${Tmp_Log});
	  # Check if the 2 ADV sectors are exactly the same.
	  if [ "${ADV_2SECTORS:0:1024}" != "${ADV_2SECTORS:1024:1024}" ] ; then
	     Syslinux_Msg='${Syslinux_Msg} The 2 ADV sectors are not the same (corrupt).';
	     return;
	  fi
	  # Check if the ADV area contains the ADV head and tail magic.
	  if ( [ "${ADV_2SECTORS:0:8}" = "${ADV_MAGIC_HEAD}" ] && [ "${ADV_2SECTORS:1016:8}" = "${ADV_MAGIC_TAIL}" ] ) ; then
	     # Caculate the ADV checksum.
	     ADV_calculated_checksum=$(hexdump -v -s $(( ${ADVoffset} + 8 )) -n $((512 - 3*4)) -e '/4 "%u\n"' ${Tmp_Log} \
				     | ${AWK} 'BEGIN { csum='${ADV_MAGIC_CHECKSUM}' } { csum=(csum - $1 + 4294967296)%4294967296 } END { print csum }');
	     ADV_read_checksum=$(hexdump -s $(( ${ADVoffset} + 4 )) -n 4 -e '/4 "%u\n"' ${Tmp_Log});
	     if [ ${ADV_calculated_checksum} -eq ${ADV_read_checksum} ] ; then 
		# Get the info stored in the ADV area:
		#
		# maximum 2 entries can be stored in the ADV, which have the following layout:
		#   - byte 1		     : tag	==> 0 = no entry, 1 = boot-once entry, 2 = menu-save entry
		#   - byte 2		     : tag_len	==> length of label string
		#   - byte 3 - (3 + tag_len) : label	==> label name that will be used
		# First entry starts a offset 8.
		ADVentry_offset=8;
		until eval $(hexdump -s $(( ${ADVoffset} + ${ADVentry_offset} )) -n $((512 - 3*4)) \
			     -e '1/1 "tag=%u; " 1/1 "tag_len=%u; label='\''" 498 "%_p"' ${Tmp_Log};
			   printf "'");
		      [ ${tag} -eq 0 ] ; do
		  if [ ${tag_len} -gt 0 ] ; then
		     label=${label:0:${tag_len}};
		  fi		   
		  case ${tag} in
			1) Syslinux_Msg="${Syslinux_Msg} ${syslinux_version:0:8}'s ADV is set to boot label \"${label}\" next boot only.";;
			2) Syslinux_Msg="${Syslinux_Msg} ${syslinux_version:0:8}'s ADV is set to boot label \"${label}\" by default.";;
		  esac
		  # Adjust the ADVentry_offset, so it points to the next entry.
		  ADVentry_offset=$(( ${ADVentry_offset} + ${tag_len} + 2 ));
		done
	     else
		Syslinux_Msg="${Syslinux_Msg} The integrity check of the ADV area failed.";
	     fi
	  else
	     Syslinux_Msg="${Syslinux_Msg} The ADV head and tail magic bytes were not found.";
	  fi
       fi
       return;
    fi
  done
  # LDLINUX_MAGIC not found.
  Syslinux_Msg='${Syslinux_Msg} It is very unlikely that Syslinux is (still) installed. The second stage could not be found.';
}
## Grub Legacy ##
#   Determine the embeded location of stage 2 in a stage 1 file,
#   look for the stage 2 and, if found, determine the
#   the location and the path of the embedded menu.lst.
stage2_loc () {
  local stage1="$1" HI;
  offset=$(hexdump -v -s 68 -n 4 -e '4 "%u"' "${stage1}");
  dr=$(hexdump -v -s 64 -n 1 -e '1/1 "%u"' "${stage1}");
  pa='T';
  Grub_Version='';
  for HI in ${!HDName[@]}; do
    hdd=${HDName[${HI}]};
    if [ ${offset} -lt  ${HDSize[HI]} ] ; then
       tmp=$(dd if=${hdd} skip=${offset} count=1 2>> ${Trash} | hexdump -v -n 4 -e '"%x"');
       if [[ "${tmp}" = '3be5652' || "${tmp}" = 'bf5e5652' ]] ; then
	  # stage2 files were found.
	  dd if=${hdd} skip=$((offset+1)) count=1 of=${Tmp_Log} 2>> ${Trash};
	  pa=$(hexdump -v -s 10 -n 1 -e '"%d"' ${Tmp_Log});
	  stage2_hdd=${hdd};
	  Grub_String=$(hexdump -v -s 18 -n 94 -e '"%_u"' ${Tmp_Log});
	  Grub_Version=$(echo ${Grub_String} | sed -e 's/nul[^$]*//');
	  BL=${BL}${Grub_Version};
	  menu=$(echo ${Grub_String} | sed -e 's/[^\/]*//' -e 's/nul[^$]*//');
	  menu=${menu%% *};
       fi
    fi
  done
  dr=$((${dr}-127));
  Stage2_Msg="looks at sector ${offset}";       
  if [ "${dr}" -eq 128 ] ; then
     Stage2_Msg="${Stage2_Msg} of the same hard drive";
  else
     Stage2_Msg="${Stage2_Msg} on boot drive #${dr}";
  fi
  Stage2_Msg="${Stage2_Msg} for the stage2 file";
  if [ "${pa}" = "T" ] ; then
     # no stage 2 file found.
     Stage2_Msg="${Stage2_Msg}, but no stage2 files can be found at this location.";
  else
     pa=$((${pa}+1));
     Stage2_Msg="${Stage2_Msg}.  A stage2 file is at this location on ${stage2_hdd}.  Stage2 looks on";
     if [ "${pa}" -eq 256 ] ; then
	Stage2_Msg="${Stage2_Msg} the same partition";
     else
	Stage2_Msg="${Stage2_Msg} partition #${pa}";
     fi
     Stage2_Msg="${Stage2_Msg} for ${menu}.";
  fi
}
## Grub2 ##
#   Collect fragments of core.img using information encoded in the first
#   block (diskboot.img).
#

grub2_read_blocklist () {
  local hdd="$1";
  local core_img_file="$2";
  local sector_nr_low sector_nr_high sector_nr fragment_size;
  local fragment_offset=1 block_list=500;
  # Assemble fragments from "hdd" passed to grub2_info.
  # Each block list entry is 12 bytes long and consists of
  #   8 bytes = fragment start absolute disk offset in sectors of 512 bytes
  #   2 bytes = fragment size in sectors of 512 bytes
  #   2 bytes = memory segment to load fragment into
  # Entries start at the end of the first sector of core.img and
  # go down. End marker is all zeroes.
  #
  # Blocklists were changed to 64 bit in 2006, so all versions BIS detects
  # should have it.
  #
  # Older versions of hexdump do not support 8 byte integers, so read
  # high and low words separately.
   while [ ${block_list} -gt 12 ] ; do
     sector_nr_low=$(hexdump -v -n 4 -s ${block_list} -e '1/4 "%u"' ${core_img_file});
     sector_nr_high=$(hexdump -v -n 4 -s $((block_list+4)) -e '1/4 "%u"' ${core_img_file});
     let "sector_nr = (sector_nr_high << 32) + sector_nr_low";
     if [ ${sector_nr} -eq 0 ] ; then
	return;
     fi
     fragment_size=$(hexdump -v -n 2 -s $((block_list+8)) -e '1/2 "%u"' ${core_img_file});
     dd if="${hdd}" of=${core_img_file} skip=${sector_nr} seek=${fragment_offset} count=${fragment_size} 2>> ${Trash} || return;
     let "fragment_offset += fragment_size";
     let "block_list -= 12";
  done
}

## Grub2 ##
#   Determine the embeded module name. This function implements manual
#   parsing of ELF information to avoid dependency on binutils or similar.
grub2_modname ()
{
  local modfile=$1;
  local file_size=$2;
  local e_ehsize sht_offset sht_entsize sht_num sht_shdrndx sht_strtab;
  local sht_strtabsize s_nameidx s_type s_name m_offset m_size;
  local i=0;
  # ELF header is at least 52 bytes in size
  if [ "${file_size}" -lt 52 ] ; then
    return;
  fi
  # ELF Magic + CLASS32 + LSB + VERSION
  if [ "$(hexdump -n 7 -e '4/1 "%02x" 3/1 "%x"' "${modfile}")" != '7f454c46111' ] ; then
    return;
  fi
  # RELOCATABLE + MACHINE + VERSION
  if [ "$(hexdump -s 16 -n 8 -e '2/2 "%x" 1/4 "%x"' "${modfile}")" != '131' ] ; then
    return;
  fi
  # ELF header size
  e_ehsize=$(hexdump -s 40 -n 2 -e '"%u"' "${modfile}")
  if [ "${e_ehsize}" -lt 52 -o "${e_ehsize}" -gt "${file_size}" ] ; then
    return;
  fi
  # Offset of section headers table
  sht_offset=$(hexdump -s 32 -n 4 -e '"%u"' "${modfile}")
  if [ "${sht_offset}" -lt "${e_ehsize}" -o "${sht_offset}" -ge "${file_size}" ] ; then
    return;
  fi
  # Size of section header
  sht_entsize=$(hexdump -s 46 -n 2 -e '"%u"' "${modfile}")
  # Number of section headers
  sht_num=$(hexdump -s 48 -n 2 -e '"%u"' "${modfile}")
  if [ "${sht_entsize}" -eq 0 -o "${sht_num}" -eq 0 -o $((sht_offset + sht_entsize*sht_num)) -gt "${file_size}" ] ; then
    return;
  fi
  # Index of section names string table
  sht_shdrndx=$(hexdump -s 50 -n 2 -e '"%u"' "${modfile}")
  if [ "${sht_shdrndx}" -ge "${sht_num}" ] ; then
    return;
  fi
  # Offset of section names string table
  sht_strtab=$(hexdump -s $((sht_offset + $((sht_shdrndx*sht_entsize)) + 16))  -n 4 -e '"%u"' "${modfile}");
  if [ "${sht_strtab}" -lt "${e_ehsize}" -o "${sht_strtab}" -ge "${file_size}" ] ; then
    return;
  fi

  # Size of section names string table
  sht_strtabsize=$(hexdump -s $((sht_offset + $((sht_shdrndx*sht_entsize)) + 20))  -n 4 -e '"%u"' "${modfile}");
  if [ "${sht_strtabsize}" -eq 0 -o "${sht_strtabsize}" -gt "$((file_size-sht_strtab))" ] ; then
    return;
  fi
  while [ "${i}" -lt $((sht_entsize*sht_num)) ] ; do
    s_nameidx=$(hexdump -s $((sht_offset + i))  -n 4 -e '"%u"' "${modfile}");
    if [ "${s_nameidx}" -lt "${sht_strtabsize}" ] ; then
      s_type=$(hexdump -s $((sht_offset + i + 4))  -n 4 -e '"%u"' "${modfile}");
      # PROGBITS
      if [ "${s_type}" -eq 1 ] ; then
	s_name=$(hexdump -s $((sht_strtab + s_nameidx))  -n "${sht_strtabsize}" -e "1/${sht_strtabsize} \"%s\"" "${modfile}");
	if [ "${s_name}" = '.modname' ] ; then
	  m_offset=$(hexdump -s $((sht_offset + i + 16))  -n 4 -e '"%u"' "${modfile}");
	  m_size=$(hexdump -s $((sht_offset + i + 20))  -n 4 -e '"%u"' "${modfile}");
	  if [ $((m_offset + m_size)) -lt "${file_size}" ] ; then
	    hexdump -s "${m_offset}"  -n "${m_size}" -e "/${m_size} \"%s\"" "${modfile}";
	    return
	  fi
	fi
      fi
    fi
    : $((i+=sht_entsize))
  done
  # Display "???" as indication that parsing failed
  printf '%s' '???'
  return
}
## Grub2 ##
##   Determine the (embeded) location of core.img for a Grub2 boot.img file,
#   determine the path of the grub2 directory and look for an embedded config file.
#
grub2_info () {
  local stage1="$1" hdd="$2";
  # When $grub2_version is "1.99-2.00", we want to override this value
  # with a more exact value later (needs to be a global variable).
  grub2_version="$3";
  # Have we got plain file or need to collect full core.img from blocklists?
  local core_source="$4";
  local sector_offset drive_offset directory_offset sector_nr drive_nr drive_nr_hex;
  local partition core_dir embedded_config HI magic core_img_found=0 embedded_config_found=0;
  local total_module_size kernel_image_size compressed_size offset_lzma lzma_uncompressed_size;
  local grub_module_info_offset grub_module_magic grub_modules_offset grub_modules_size;
  local grub_module_type grub_module_size grub_module_header_offset grub_modules_end_offset;
  local lzma_compressed_size reed_solomon_redundancy reed_solomon_length boot_dev boot_drive;
  local core_img_flavour='detect' modname all_modules need_core_prologue=0;
  local grub_module_header_next;
  > ${core_img_file_type_2}
  case "${grub2_version}" in
    1.96) sector_offset='68';  drive_offset='76'; directory_offset='553';;
    1.97-1.98) sector_offset='92';  drive_offset='100'; directory_offset='540';;
    1.99|1.99-2.00|2.00) sector_offset='92';  drive_offset='100';;
  esac

  # Offset to core.img (in sectors).
  sector_nr=$(hexdump -v -s ${sector_offset} -n 4 -e '4 "%u"' "${stage1}" 2>> ${Trash});

  # BIOS drive number on which grub2 looks for its second stage (=core.img):
  #   - "0xff" means that grub2 will use the BIOS drive number passed via the DL register.
  #   - if this value isn't "0xff", that value will used instead.
  # Since version 1.97 GRUB2 is using only 0xff. We cannot reliably determine BIOS numbers
  # anyway, so just skip core.img detection in this case.
  drive_nr_hex=$(hexdump -v -s ${drive_offset} -n 1 -e '"0x%02x"' "${stage1}" 2>> ${Trash});
  drive_nr=$(( ${drive_nr_hex} - 127 ));

  if [ "${drive_nr_hex}" != '0xff' ] ; then
    Grub2_Msg="is configured to load core.img from BIOS drive ${drive_nr} (${drive_nr_hex}) instead of using the boot drive passed by the BIOS";
    return
  fi
  Grub2_Msg="pointe sur le secteur ${sector_nr} du même disque pour le fichier core.img";
  for HI in ${!HDName[@]} ; do
    # If the drive name passed to grub2_info matches the drive name of the current
    # value of HDName, see if the sector offset to core.img is smaller than the
    # total number of sectors of that drive.
    if [ ${hdd} = ${HDName[${HI}]} ] ; then
       if [ ${sector_nr} -lt ${HDSize[HI]} ] ; then
	  if [ "${core_source}" = 'file' ] ; then
	     # Use "file" passed to grub2_info directly.
	     dd if="${stage1}" of=${core_img_file} skip=${sector_nr} count=1024 2>> ${Trash};
	  else
	     # Use "hdd" passed to grub2_info.
	     # First make sure to collect core.img fragments. Read the first block of
	     # core.img and assemble it further from blocklists
	     dd if="${hdd}" of=${core_img_file} skip=${sector_nr} count=1 2>> ${Trash};
	     grub2_read_blocklist "${hdd}" ${core_img_file};
	  fi
	  magic=$(hexdump -v -n 4 -e '/1 "%02x"' ${core_img_file});
	  # 5256be1b - upstream diskboot.S
	  # 5256be6f - unknown
	  # 52e82801 - Ubuntu diskboot.S with conditional message
	  # 52bff481 - RHEL7 diskboot.S with patched out message
	  # 5256be63 - trustedgrub2 1.4
	  # 5256be56 - diskboot.S with mjg TPM patches (e.g. in openSUSE Tumbleweed)
	  case "${magic}" in
	     '5256be1b'|'5256be6f'|'52e82801'|'52bff481'|'5256be63'|'5256be56')
	        core_img_found=1;;
	  esac
	  if [ ${core_img_found} -eq 1 ] ; then
	     if ( [ "${grub2_version}" = '1.99' ] || [ "${grub2_version}" = '1.99-2.00' ] || [ "${grub2_version}" = '2.00' ] ) ; then
		# Find the last 8 bytes of lzma_decode to find the offset of the lzma_stream:
		#   - v1.99: "d1 e9 df fe ff ff 00 00"
		#   - v2.00: "d1 e9 df fe ff ff 66 90" (pad bytes NOP)
		#            "d1 e9 df fe ff ff 8d"    (pad bytes LEA ...)
		#
		# arvidjaar@gmail.com:
		#   final directive in startup_raw.S is .p2align 4 which
		#   (at least using current GCC/GAS) adds lea instructions
		#   (8d...). Exact format and length apparently depend on pad
		#   size and may be on toolkit version. So just accept anything
		#   starting with lea.
		#
		# FIXME what if it ends on exact 16 byte boundary?

		eval $(hexdump -v -n 10000 -e '1/1 "%02x"' ${core_img_file} | \
		     ${AWK} '{ found_at=match($0, "d1e9dffeffff" ); if (found_at == "0") { print "offset_lzma=0" } \
			    else { print "offset_lzma=" ((found_at - 1 ) / 2 ) + 8 "; lzma_decode_last8bytes=" substr($0,found_at,16) ";" } }');

		if [ "${grub2_version}" = '1.99-2.00' ] ; then
		   if ( [ "${lzma_decode_last8bytes}" = "d1e9dffeffff6690" ] || [ "${lzma_decode_last8bytes:0:14}" = "d1e9dffeffff8d" ] || [ "${lzma_decode_last8bytes}" = "d1e9dffeffff8d76" ] ) ; then  #bug 1318381
		      grub2_version='2.00';
		   else
		      grub2_version='1.99';
		   fi
		fi
	     else
		# Grub2 (v1.96 and v1.97-1.98).
		partition=$(hexdump -v -s 532 -n 1 -e '"%d"' ${core_img_file});
		core_dir=$(hexdump -v -s ${directory_offset} -n 64 -e '"%_u"' ${core_img_file} | sed 's/nul[^$]*//');
	     fi
	     if [ "${grub2_version}" = '1.99' ] ; then
		# For Grub2 (v1.99), the core_dir is just at the beginning of the compressed part of core.img.
		# Get grub_total_module_size	: byte 0x208-0x20b of embedded core.img ==> byte 520
		# Get grub_kernel_image_size	: byte 0x20c-0x20f of embedded core.img ==> byte 524
		# Get grub_compressed_size	: byte 0x210-0x213 of embedded core.img ==> byte 528
		# Get grub_install_dos_part	: byte 0x214-0x218 of embedded core.img ==> byte 532 --> only 1 byte needed (partition)
		eval $(hexdump -v -s 520 -n 13 -e '1/4 "total_module_size=%u; " 1/4 "kernel_image_size=%u; " 1/4 "compressed_size=%u; " 1 "partition=%d;"' ${core_img_file});

		# Do we have xz or lzma installed?
		if [ "${UNLZMA}" != 'none' ] ; then
		   if [ ${offset_lzma} -ne 0 ] ; then
		      # Correct the offset to the lzma stream, when 8 subsequent bytes of zeros are at the start of this offset.
		      if [ $(hexdump -v -s ${offset_lzma} -n 8 -e '1/1 "%02x"'  ${core_img_file}) = '0000000000000000' ] ; then
			 offset_lzma=$(( ${offset_lzma} + 8 ));
		      fi
		      # Calculate the uncompressed size to which the compressed lzma stream needs to be expanded. 
		      lzma_uncompressed_size=$(( ${total_module_size} + ${kernel_image_size} - ${offset_lzma} + 512 ));
		      # Make lzma header (13 bytes): ${lzma_uncompressed_size} must be displayed in little endian format.
		      printf '\x5d\x00\x00\x01\x00'$( printf '%08x' $((${lzma_uncompressed_size} - ${offset_lzma} + 512 )) \
			 | ${AWK} '{printf "\\x%s\\x%s\\x%s\\x%s", substr($0,7,2), substr($0,5,2), substr($0,3,2), substr($0,1,2)}' )'\x00\x00\x00\x00' > ${Tmp_Log};
		      # Get lzma_stream, add it after the lzma header and decompress it.
		      dd if=${core_img_file} bs=${offset_lzma} skip=1 count=$((${lzma_uncompressed_size} / ${offset_lzma} + 1)) 2>> ${Trash} \
			 | cat ${Tmp_Log} - | ${UNLZMA} 2>> ${Trash} > ${core_img_file_unlzma};
		      # Get core dir.
		      core_dir=$( hexdump -v -n 64 -e '"%_c"' ${core_img_file_unlzma} );
		      # Remove "\0"s at the end.
		      core_dir="${core_dir%%\\0*}";
		      # Offset of the grub_module_info structure in the uncompressed part.
		      grub_module_info_offset=$(( ${kernel_image_size} - ${offset_lzma} + 512 ));
		      eval $(hexdump -v -n 12 -s ${grub_module_info_offset} -e '"grub_module_magic=" 4/1 "%_c" 1/4 "; grub_modules_offset=%u; " 1/4 "grub_modules_size=%u;"' ${core_img_file_unlzma});
		      # Check for the existence of the grub_module_magic.
		      if [ x"${grub_module_magic}" = x'mimg' ] ; then
			 # Embedded grub modules found.
			 grub_modules_end_offset=$(( ${grub_module_info_offset} + ${grub_modules_size} ));
			 grub_module_header_offset=$(( ${grub_module_info_offset} + ${grub_modules_offset} ));
			 # Traverse through the list of modules and check if it is a config module.
			 while [ ${grub_module_header_offset} -lt ${grub_modules_end_offset} ] ; do
			   eval $(hexdump -v -n 8 -s ${grub_module_header_offset} -e '1/4 "grub_module_type=%u; " 1/4 "grub_module_size=%u;"' ${core_img_file_unlzma});
			   if [ ${grub_module_type} -eq 2 ] ; then
			      # This module is an embedded config file.
			      embedded_config_found=1;
			      embedded_config=$( hexdump -v -n $(( ${grub_module_size} - 8 )) -s $(( ${grub_module_header_offset} + 8 )) -e '"%_c"' ${core_img_file_unlzma} );
			      # Remove "\0" at the end.
			      embedded_config=$( printf "${embedded_config%\\0}" );
			      break;
			   fi
			   grub_module_header_offset=$(( ${grub_module_header_offset} + ${grub_module_size} ));
			 done
		     fi		      
		   fi
		else
		   # When xz or lzma isn't available, we can't get the core_dir, but we still can show some info.
		   core_dir='??';
		   echo 'To be able to see for which directory Grub2 (v1.99) looks for, install "xz" or "lzma".' >&2;
		fi
	     elif [ "${grub2_version}" = '2.00' ] ; then
		# For Grub2 (v2.00), the core_dir is stored in the compressed part of core.img in the same
		# way as the modules and embedded config file.
		# Get grub_compressed_size	   : byte 0x208-0x20b of embedded core.img ==> byte 520
		# Get grub_uncompressed_size	   : byte 0x20c-0x20f of embedded core.img ==> byte 524
		# Get grub_reed_solomon_redundancy : byte 0x210-0x213 of embedded core.img ==> byte 528
		# Get grub_no_reed_solomon_length  : byte 0x214-0x217 of embedded core.img ==> byte 532
		# Get grub_boot_dev		   : byte 0x218-0x21a of embedded core.img ==> byte 536 ( should also contain the grub_boot_drive field )
		# Get grub_boot_drive		   : byte 0x21b of embedded core.img ==> byte 539
		eval $(hexdump -v -s 520 -n 20 -e '1/4 "lzma_compressed_size=%u; " 1/4 "lzma_uncompressed_size=%u; " 1/4 "reed_solomon_redundancy=%u; " 1/4 "reed_solomon_length=%u; boot_dev=" 3/1 "%x" 1 "; boot_drive=%d;"' ${core_img_file});

		# Do we have xz or lzma installed?
		if [ "${UNLZMA}" != 'none' ] ; then
		   if [ ${offset_lzma} -ne 0 ] ; then
		      # Grub2 pads the start of the lzma stream to a 16 bytes boundary.
		      # Correct the offset to the lzma stream if necessary
		      # Current GCC adds lea instructions as pad bytes
		      offset_lzma=$(( ${offset_lzma} - 2 )); #bug 1318381
		      padsize=$(( (((${offset_lzma} + 15) >> 4) << 4) - ${offset_lzma} )); 
		      if ( [ ${padsize} -gt 0 ] ) ; then 
			 offset_lzma=$(( ${offset_lzma} + ${padsize} )); 
		      fi
		      # Make lzma header (13 bytes): ${lzma_uncompressed_size} must be displayed in little endian format.
		      printf '\x5d\x00\x00\x01\x00'$( printf '%08x' ${lzma_uncompressed_size} \
			 | ${AWK} '{printf "\\x%s\\x%s\\x%s\\x%s", substr($0,7,2), substr($0,5,2), substr($0,3,2), substr($0,1,2)}' )'\x00\x00\x00\x00' > ${Tmp_Log};
		      # Get lzma_stream, add it after the lzma header and decompress it.
		      dd if=${core_img_file} bs=${offset_lzma} skip=1 count=${lzma_compressed_size} 2>> ${Trash} \
			 | cat ${Tmp_Log} - | ${UNLZMA} 2>> ${Trash} > ${core_img_file_unlzma};
		      # Get offset to the grub_module_info structure in the uncompressed part.
		      eval $(hexdump -v -s 19 -n 4 -e '1/4 "grub_module_info_offset=%u;"' ${core_img_file_unlzma});
		      eval $(hexdump -v -n 12 -s ${grub_module_info_offset} -e '"grub_module_magic=" 4/1 "%_c" 1/4 "; grub_modules_offset=%u; " 1/4 "grub_modules_size=%u;"' ${core_img_file_unlzma});
		      # Check for the existence of the grub_module_magic.
		      if [ x"${grub_module_magic}" = x'mimg' ] ; then
			 # Embedded grub modules found.
			 grub_modules_end_offset=$(( ${grub_module_info_offset} + ${grub_modules_size} ));
			 grub_module_header_offset=$(( ${grub_module_info_offset} + ${grub_modules_offset} ));
			 # Traverse through the list of modules and check if it is a config module.
			 # Upstream GRUB2 supports following module types:
			 #   0 - ELF modules; may be included multiple times
			 #   1 - memory disk image; should be included just once
			 #   2 - embedded initial configuration code; should be included just once
			 #   3 - initial value of ${prefix} variable. Device part may be omitted,
			 #       in which case device is guessed at startup
			 #   4 - public GPG keyring used for file signature checking;
			 #       may be included multiple times
			 #
			 # All parts are optional (although in practice
			 # at least drivers for disk and filesystem must be
			 # present).
			 #
			 # Since RPM version 2.00-10 fedora includes patch that
			 # inserts additional module type after the first one,
			 # thus shifting all numbers starting with 1. So
			 # embedded config and prefix become 3 and 4 on fedora.
			 while [ ${grub_module_header_offset} -lt ${grub_modules_end_offset} ] ; do
			   if [ $(( ${grub_modules_end_offset} - ${grub_module_header_offset} )) -lt 8 ] ; then
			      echo 'Remaining space in GRUB2 module list too short for a module' >&2;
			      all_modules="${all_modules} <short>";
			      need_core_prologue=1;
			      break
			   fi
			   eval $( hexdump -v -n 8 -s ${grub_module_header_offset} -e '1/4 "grub_module_type=%u; " 1/4 "grub_module_size=%u;"' ${core_img_file_unlzma} );
			   # Next module is always aligned on 4 bytes boundary on i386,
			   # but sometimes grub stores shorter size. Make sure to adjust it.
			   grub_module_header_next=$(( ${grub_module_header_offset} + 8 + (((${grub_module_size} - 8 + 3) >> 2) << 2) ));
			   if [ ${grub_module_header_next} -gt ${grub_modules_end_offset} ] ; then
			      printf 'GRUB2 module size too large; skipping remaining modules. Size left: %d\n' $(( {grub_modules_end_offset} - ${grub_module_header_offset} )) >&2;
			      all_modules="${all_modules} <skipped>";
			      need_core_prologue=1;
			      break
			   fi
			   if [ ${grub_module_type} -eq 0 ] ; then
			      # Regular ELF module
			      dd count=$(( grub_module_size - 8 )) skip=$(( grub_module_header_offset + 8 )) if=${core_img_file_unlzma} of=${GRUB200_Module} bs=1 2>> ${Trash};
			      modname=$(grub2_modname ${GRUB200_Module} $(( grub_module_size - 8 )));
			      if [ -n "${modname}" ] ; then
			        all_modules="${all_modules} ${modname}";
				need_core_prologue=1;
			      fi
			   elif [ ${grub_module_type} -eq 1 ] ; then
			      # "stale" ELF module on fedora or memory disk everywhere else
			      if [ ${core_img_flavour} = 'detect' ] ; then
				 if [ "$(hexdump -v -n 4 -s $((grub_module_header_offset+8)) -e '"%c"' ${core_img_file_unlzma})" = $'\x7f''ELF' ] ; then
				    # fedora "stale" ELF module
				    # TODO display Fedora stale modules
				    core_img_flavour='fedora';
				 else
				    core_img_flavour='upstream';
				 fi
			      fi
			   elif [ ${grub_module_type} -eq 2 ] ; then
			      # memory disk on fedora or embedded config everywhere else
			      if [ ${core_img_flavour} = 'detect' ] ; then
			         # Normally core.img will have prefix which is easier to detect,
			         # so leave detection as last resort.
			         dd if=${core_img_file_unlzma} of=${core_img_file_type_2} bs=1 skip=$((grub_module_header_offset+8)) count=$((grub_module_size-8)) 2>> ${Trash};
			      fi
			      if [ ${core_img_flavour} = 'upstream' ] ; then
				 # This module is an embedded config file.
				 embedded_config_found=1;
				 need_core_prologue=1;
				 # Remove padding starting with the first "\0" at the end.
				 embedded_config=$( hexdump -v -n $(( ${grub_module_size} - 8 )) -s $(( ${grub_module_header_offset} + 8 )) -e '"%_c"' ${core_img_file_unlzma} | sed -e 's/\(\\0\).*$//');
			      fi
			   elif [ ${grub_module_type} -eq 3 ] ; then
			      # embedded config on fedora or prefix everywhere else
			      if [ ${core_img_flavour} = 'detect' ] ; then
				 # if it looks like file name, assume prefix
				 if [[ "$(hexdump -v -n 1 -s $(( grub_module_header_offset + 8 )) -e '"%c"' ${core_img_file_unlzma})" == [/\(] ]] ; then
				    core_img_flavour='upstream';
				 else
				    core_img_flavour='fedora';
				 fi
			      fi
			      if [ ${core_img_flavour} = 'upstream' ] ; then
				 # This module contains the prefix.
				 # Get core dir.
				 # Remove padding "\0"'s at the end.
				 core_dir=$( hexdump -v -n $(( ${grub_module_size} - 8 )) -s $(( ${grub_module_header_offset} + 8 )) -e '"%_c"' ${core_img_file_unlzma} | sed -e 's/\(\\0\)\+$//');
			      elif [ ${core_img_flavour} = 'fedora' ] ; then
				 # This module is an embedded config file.
				 embedded_config_found=1;
				 need_core_prologue=1;
				 # Remove padding starting with the first "\0" at the end.
				 embedded_config=$( hexdump -v -n $(( ${grub_module_size} - 8 )) -s $(( ${grub_module_header_offset} + 8 )) -e '"%_c"' ${core_img_file_unlzma} | sed -e 's/\(\\0\).*$//');
			      fi
			   elif [ ${grub_module_type} -eq 4 ] ; then
			      # prefix on fedora or GPG keyring everywhere else
			      if [ ${core_img_flavour} = 'detect' ] ; then
				 # if it looks like file name, assume prefix
			         # GPG ring normall has \x99 as first byte
				 if [[ "$(hexdump -v -n 1 -s $(( grub_module_header_offset + 8 )) -e '"%c"' ${core_img_file_unlzma})" == [/\(] ]] ; then
				    core_img_flavour='fedora';
				 else
				    core_img_flavour='upstream';
				 fi
			      fi
			      if [ ${core_img_flavour} = 'fedora' ] ; then
				 # This module contains the prefix.
				 # Get core dir.
				 # Remove padding "\0"'s at the end.
				 core_dir=$( hexdump -v -n $(( ${grub_module_size} - 8 )) -s $(( ${grub_module_header_offset} + 8 )) -e '"%_c"' ${core_img_file_unlzma} | sed -e 's/\(\\0\)\+$//');
			      elif [ ${core_img_flavour} = 'upstream' ] ; then
				 # TODO list GPG keyring
				 :
			      fi
			   fi
			   grub_module_header_offset=${grub_module_header_next};
			 done
		      fi	      
		   fi
		else
		   # When xz or lzma isn't available, we can't get the core_dir, but we still can show some info.
		   core_dir='??';
		   echo 'To be able to see for which directory Grub2 (v2.00) looks for, install "xz" or "lzma".' >&2;
		fi
	     fi
	  fi
       fi
    fi
  done
  if [ "${grub2_version}" = '2.00' ] ; then
     if [ -s ${core_img_file_type_2} ] ; then
	if [ "${core_img_flavour}" = 'detect' ] ; then
	   # Neither type 1, 3 or 4 modules were present. So we have either
	   # embedded config or memory disk. 
	   if type file > /dev/null 2>>$LogFile ; then
	      if [[ "$(LC_ALL=C file ${core_img_file_type_2})" == *"ASCII text"* ]] ; then
		 # upstream embedded config
		 core_img_flavour='upstream';
	      fi
	   fi
	fi
	if [ ${core_img_flavour} = 'upstream' ] ; then
	   embedded_config_found=1;
	   need_core_prologue=1;
	   # Remove padding starting with the first "\0" at the end.
	   embedded_config=$( hexdump -v -e '"%_c"' ${core_img_file_type_2} | sed -e 's/\(\\0\).*$//' );
	fi
     fi
  fi
  if [ ${core_img_found} -eq 0 ] ; then
     # core.img not found.
     Grub2_Msg="${Grub2_Msg}, Mais core.img n'y est pas!";
  else
     # core.img found.
     Grub2_Msg="${Grub2_Msg}. core.img est à cet endroit";
     # In GRUB 2.00 core.img prefix is optional
     if [ -n "${core_dir}" ]; then
	Grub2_Msg="${Grub2_Msg} et pointe sur ${core_dir}";
	if [ -n "${partition}" ]; then
	   partition=$(( ${partition} + 1 ));
	   if [ ${partition} -eq 255 ] ; then
	      Grub2_Msg="${Grub2_Msg} de ce disque";
	   else
	      Grub2_Msg="${Grub2_Msg} dans la partition ${partition}";
	   fi
	fi
     fi
     if [ ${need_core_prologue} -eq 1 ] ; then
	Grub2_Msg=$(printf "${Grub2_Msg}. il embarque aussi les composants suivants:");
     fi
     if [ -n "${all_modules}" ] ; then
	all_modules="${all_modules# }";
	Grub2_Msg=$(printf "${Grub2_Msg}\n\nmodules\n--------------------------------------------------------------------------------\n${all_modules}\n--------------------------------------------------------------------------------");
     fi
     if [ ${embedded_config_found} -eq 1 ] ; then
	# Embedded config file found.
	Grub2_Msg=$(printf "${Grub2_Msg}\n\nconfig script\n--------------------------------------------------------------------------------\n${embedded_config}\n--------------------------------------------------------------------------------");
     fi
  fi
}
## Get embedded menu for grub4dos (grldr/grub.exe) and wee (installed in the MBR). ##
#   Function arguments:
#   - arg 1:  source     = file (grub4dos) / device (WEE)
#   - arg 2:  titlename  = first part of the title that needs to be displayed
#
get_embedded_menu () {
  local source=$1 titlename=$2;
  # Check if magic bytes that go before the embedded menu, are present.
  offset_menu=$(dd if="${source}" count=4 bs=128k 2>> ${Trash} | hexdump -v -e '/1 "%02x"' | grep -b -o 'b0021ace000000000000000000000000');
  if [ -n "${offset_menu}" ] ; then
     # Magic found.
     titlebar_gen "${titlename}" " embedded menu";
     echo '--------------------------------------------------------------------------------' >> "${Log1}";
     # Calcutate the exact offset to the embedded menu.
     offset_menu=$(( ( ${offset_menu%:*} / 2 ) + 16 ));
	 dd if="${source}" count=1 skip=1 bs=${offset_menu} 2>> ${Trash} | ${AWK} 'BEGIN { RS="\0" } { if (NR == 1) print $0 }' >> "${Log1}";
     echo '--------------------------------------------------------------------------------' >> "${Log1}";
  fi
}

## Get_Partition_Info search a partition for information relevant for booting. ##
##   Function arguments:
##   - arg 1:  log        = local version of RESULT.txt
#   - arg 2:  log1       = local version of log1
#   - arg 3:  part       = device for the partition
#   - arg 4:  name       = descriptive name for the partition
#   - arg 5:  mountname  = path where  partition will be mounted.
#   - arg 6:  kind       = kind of the partition
#   - arg 7:  start      = starting sector of the partition
#   - arg 8:  end        = ending sector of the partition
#   - arg 9:  system     = system of the partition
#   - arg 10: PI         = PI of the partition, (equal to "", if not a regular partition) 
Get_Partition_Info() {
  local Log="$1" Log1="$2" part="$3" name="$4" mountname="$5"  kind="$6"  start="$7"  end="$8" system="$9" PI="${10}";
  local line size=$((end-start)) BST='' BSI='' BFI='' OS='' BootFiles='' Bytes80_to_83='' Bytes80_to_81='' offset='';
  local offset_menu='' part_no_mount=0 com32='' com32_version='';
  echo "Searching ${name} for information... ";
  PrintBlkid ${part};
   # Type of filesystem according to blkid.
  type=$(BlkidTag ${part} TYPE);
  [ "${system}" = 'BIOS Boot partition' ] && type='BIOS Boot partition';
  [ -n ${PI} ] && FileArray[${PI}]=${type};
  # Display partition subtitle of 80 characters width.
  line='________________________________________________________________________________';
  line=${line:$(( ${#name} + 2 ))};
  printf '%s: %s\n\n' "${name}" "${line}" >> "${Log}";
  # Check for extended partion.
  if ( [ "${kind}" = 'E' ] && [ x"${type}" = x'' ] ) ; then
     type='Extended Partition';
     # Don't display the error message from blkid for extended partition.
     cat ${Tmp_Log} >> ${Trash};
  else
     cat ${Tmp_Log} >&2;
  fi
  # Display the File System Type.
  echo "    File system:       ${type}" >> "${Log}";
  # Get bytes 0x80-0x83 of the Volume Boot Record (VBR).
  Bytes80_to_83=$(hexdump -v -n 4 -s $((0x80)) -e '4/1 "%02x"' ${part});
  # Get bytes 0x80-0x81 of the Volume Boot Record (VBR).
  Bytes80_to_81="${Bytes80_to_83:0:4}";
  case ${Bytes80_to_81} in
	0069) BST='ISOhybrid (Syslinux 3.72-3.73)';;
	010f) BST='HP Recovery';;
	019d) BST='BSD4.4: FAT32';;
	0211) BST='Dell Utility: FAT16';;
	0488) BST="Grub2's core.img";;
	0689) BST='Syslinux 3.00-3.52';
	      syslinux_info ${part};
	      BSI="${BSI} ${Syslinux_Msg}";;
	0734) BST='Dos_1.0';;
	0745) BST='Windows Vista: FAT32';;
	089e) BST='MSDOS5.0: FAT16';;
	08cd) BST='Windows 2000/XP: NTFS';;
	0b60) BST='Dell Utility: FAT16';; 
	0bd0) BST='MSWIN4.1: FAT32';;
	0e00) BST='Dell Utility: FAT16';;
	0fb6) BST='ISOhybrid with partition support (Syslinux 3.82-3.86)';;
	2a00) BST='ReactOS';;
	2d5e) BST='Dos 1.1';;
	31c0) BST='Syslinux 4.03 or higher';
	      syslinux_info ${part} '4.03';
	      BSI="${BSI} ${Syslinux_Msg}";;
	31d2) BST="Grub2's core.img";;
	3a5e) BST='Recovery: FAT32';;
	407c) BST='ISOhybrid (Syslinux 3.82-4.04)';;
	4216) BST='Grub4Dos: NTFS';;
	4445) BST='Dell Restore: FAT32';;
	55aa) case ${Bytes80_to_83} in
		55aa750a) BST='Grub4Dos: FAT32';;
		55aa7506) # Get bytes 0x110-0x111 of the Volume Boot Record (VBR).
			  Bytes110_to_111=$(hexdump -v -n 2 -s $((0x110)) -e '2/1 "%02x"' ${part});
			  case "${Bytes110_to_111}" in
			    9090) BST='Windows Vista: NTFS';;
			    2810) BST='Windows 7/2008: NTFS';;
			    0a13) BST='Windows 8/2012: NTFS';;
			  esac;;
	      esac;;
	55cd) BST='FAT32';;
	5626) BST='Grub4Dos: EXT2/3/4';;
	638b) BST='Freedos: FAT32';;
	6616) BST='Windows 7/2008: FAT16';;
	696e) BST='FAT16';;
	6974) BST='BootIt: FAT16';;
	6f65) BST='BootIt: FAT16';;
	6f6e) BST='-';;		# 'MSWIN4.1: Fat 32'
	6f74) BST='FAT32';;
	7405) BST='Windows 7/2008: FAT32';;
	7815) case ${Bytes80_to_83} in
		7815b106) BST='Syslinux 3.53-3.86';
			  syslinux_info ${part};
			  BSI="${BSI} ${Syslinux_Msg}";;
		7815*   ) BST='FAT32';;
	      esac;;
	7cc6) BST='MSWIN4.1: FAT32';;
      # 7cc6) BST='Win_98';;
	7e1e) BST='Grub4Dos: FAT12/16';;
	8a56) BST='Acronis SZ: FAT32';;
	83e1) BST='ISOhybrid with partition support (Syslinux 4.00-4.04)';;
	8ec0) BST='Windows XP: NTFS';;
	8ed0) BST='Dell Recovery: FAT32';;
	b106) BST='Syslinux 4.00-4.02';
	      syslinux_info ${part};
	      BSI="${BSI} ${Syslinux_Msg}";;
	b600) BST='Dell Utility: FAT16';;
	b6c6) BST='ISOhybrid with partition support (Syslinux 3.81)';;
	b6d1) BST='Windows XP: FAT32';;
	e2f7) BST='FAT32, Non Bootable';;
	e879) BST='ISOhybrid (Syslinux 3.74-3.80)';;
	e9d8) BST='Windows Vista/7: NTFS';;
	f6c1) BST='Windows 8/2012: FAT32';;
	f6f6) BST='- (cleared BS by FDISK)';;
	fa33) BST='Windows XP: NTFS';;
	fbc0) BST='ISOhybrid (Syslinux 3.81)';;

	## If Grub or Grub 2 is in the boot sector, investigate the embedded information. ##
	48b4) BST='Grub2 (v1.96)';
	      grub2_info ${part} ${drive} '1.96' 'partition';
	      BSI="${BSI} Grub2 (v1.96) is installed in the boot sector of ${name} and ${Grub2_Msg}.";;
	7c3c) BST='Grub2 (v1.97-1.98)';
	      grub2_info ${part} ${drive} '1.97-1.98' 'partition';
	      BSI="${BSI} Grub2 (v1.97-1.98) is installed in the boot sector of ${name} and ${Grub2_Msg}.";;
	0020) BST='Grub2 (v1.99-2.00)';
	      grub2_info ${part} ${drive} '1.99-2.00' 'partition';
	      BSI="${BSI} Grub2 (v${grub2_version}) is installed in the boot sector of ${name} and ${Grub2_Msg}.";;
 aa75 | 5272) BST='Grub Legacy';
	      stage2_loc ${part};
	      BSI="${BSI} Grub Legacy (v${Grub_Version}) is installed in the boot sector of ${name} and ${Stage2_Msg}";;
	## If Lilo is in the VBR, look for map file ##
	8053) BST='LILO';
	      # 0x20-0x23 contains the offset of /boot/map.
	      offset=$(hexdump -v -s 32 -n 4 -e '"%u"' ${part});
	      BSI="${BSI} LILO is installed in boot sector of ${part} and looks at sector ${offset} of ${drive} for the \"map\" file,";
	      # check whether offset is on the hard drive.
	      if [ ${offset} -lt  ${size} ] ; then
		 tmp=$(dd if=${drive} skip=${offset} count=1 2>> ${Trash} | hexdump -v -s 508 -n 4 -e '"%_p"');	 
		 if [ "${tmp}" = 'LILO' ] ; then
		    BSI="${BSI} and the \"map\" file was found at this location.";
		 else
		    BSI="${BSI} but the \"map\" file was not found at this location.";
		 fi
	      else
		 BSI="${BSI} but the \"map\" file was not found at this location.";
	      fi;;
	0000) # If the first two bytes are zero, the boot sector does not contain any boot loader.
	      BST='-';;
  esac
 
  ## Exclude partitions which contain no information, or which we (currently) don't know how to accces. ##
  case "${type}" in
	'BIOS Boot partition'	) part_no_mount=1;;
	'crypto_LUKS'		) part_no_mount=1;;
	'Extended Partition'	) part_no_mount=1;;
	'linux_raid_member'	) part_no_mount=1;;
	'LVM2_member'		) part_no_mount=1;;
	'swap'			) part_no_mount=1;;
	'unknown volume type'	) part_no_mount=1;;
	'zfs_member'		) part_no_mount=1;;
  esac
### CETTE SEQUENCE EST NECESSAIR
  if [ "${part_no_mount}" -eq 0 ] ; then
     # Look for a mount point of the current partition.
     # If multiple mount points are found, use the one with the shortest pathname.
     CheckMount=$(mount | ${AWK} -F "\t" '$0 ~ "^'${part}' " { sub(" on ", "\t", $0); sub(" type ", "\t", $0); print $2 }' | sort | ${AWK} '{ print $0; exit}');
     # Check whether partition is already mounted.
     if [ x"${CheckMount}" = x'' ] ; then
        mountname=/mnt/BootInfo/${mountname}
        # Directory where the partition will be mounted.
        mkdir -p "${mountname}";
     else
	if [ "${CheckMount}" = "/" ] ; then
	   mountname='';
	else
	   # If yes, use the existing mount point.
	   mountname="${CheckMount}";
	fi
     fi
     # Try to mount the partition.    CETTE SEQUENCE EST NECESSAIRE
     if [ x"${CheckMount}" != x'' ] || mount -r  -t "${type}" ${part} "${mountname}" 2>> ${Mount_Error} \
	|| ( [ "${type}" = ntfs ] &&  ntfs-3g -o ro  ${part} "${mountname}" 2>> ${Mount_Error} ) ; then
	#  If partition is mounted, try to identify the Operating System (OS) by looking for files specific to the OS.
	OS='';
	grep -q "W.i.n.d.o.w.s. .V.i.s.t.a"  "${mountname}"/{windows,Windows,WINDOWS}/{System32,system32}/{Winload,winload}.exe 2>> ${Trash} && OS='Windows Vista';
	grep -q "W.i.n.d.o.w.s. .7" "${mountname}"/{windows,Windows,WINDOWS}/{System32,system32}/{Winload,winload}.exe 2>> ${Trash} && OS='Windows 7';
	grep -q "w.i.n.8._." "${mountname}"/{windows,Windows,WINDOWS}/{System32,system32}/{Winload,winload}.exe 2>> ${Trash} && OS='Windows 8';
	for WinOS in 'MS-DOS' 'MS-DOS 6.22' 'MS-DOS 6.21' 'MS-DOS 6.0' 'MS-DOS 5.0' 'MS-DOS 4.01' 'MS-DOS 3.3' 'Windows 98' 'Windows 95'; do
	  grep -q "${WinOS}" "${mountname}"/{IO.SYS,io.sys} 2>> ${Trash} && OS="${WinOS}";
	done        
	[ -s "${mountname}/Windows/System32/config/SecEvent.Evt" ] || [ -s "${mountname}/WINDOWS/system32/config/SecEvent.Evt" ] || [ -s "${mountname}/WINDOWS/system32/config/secevent.evt" ] || [ -s "${mountname}/windows/system32/config/secevent.evt" ] && OS='Windows XP';
	[ -s "${mountname}/ReactOS/system32/config/SecEvent.Evt" ] && OS='ReactOS';
	[ -s "${mountname}/etc/issue" ] && OS=$(sed -e 's/\\. //g' -e 's/\\.//g' -e 's/^[ \t]*//' "${mountname}"/etc/issue);
	[ -s "${mountname}/etc/slackware-version" ] && OS=$(sed -e 's/\\. //g' -e 's/\\.//g' -e 's/^[ \t]*//' "${mountname}"/etc/slackware-version);
	[ -s "${mountname}/etc/redhat-release" ] && OS=$(cat "${mountname}"/etc/redhat-release | tr -d '\n');
	[ -s "${mountname}/etc/os-release" ] && grep -q '^PRETTY_NAME=' "${mountname}/etc/os-release" && OS=$(eval "$(grep '^PRETTY_NAME=' "${mountname}"/etc/os-release)"; printf '%s' "${PRETTY_NAME}" | tr -d '\n');
	## Search for files containing boot codes. ##
	# Loop through all directories which might contain boot_code files.
	for file in ${Boot_Codes_Dir} ; do
	  # If such directory exist ...
	  if [ -d "${mountname}${file}" ] && FileNotMounted "${mountname}${file}" "${mountname}" ; then
	     # Look at the content of that directory.
	     for loader in $( ls  "${mountname}${file}" ) ; do
	       # If it is a file ...
	       if [ -f "${mountname}${file}${loader}" ] && [ -s "${mountname}${file}${loader}" ] ; then
		  # Bootpart code has "BootPart" written at 0x101     
		  sig=$(hexdump -v -s 257 -n 8  -e '8/1 "%_p"' "${mountname}${file}${loader}");
		  if [ "${sig}" = 'BootPart' ] ; then
		     offset=$(hexdump -v -s 241 -n 4 -e '"%d"' "${mountname}${file}${loader}");
		     dr=$(hexdump -v -s 111 -n 1 -e '"%d"' "${mountname}${file}${loader}");
		     dr=$((dr - 127));
		     BFI="${BFI} BootPart in the file ${file}${loader} is trying to chainload sector #${offset} on boot drive #${dr}";
		  fi
		  # Grub Legacy, Grub2 (v1.96) and Grub2 (v1.99) have "GRUB" written at 0x17f.
		  sig=$(hexdump -v -s 383 -n 4 -e '4/1 "%_p"' "${mountname}${file}${loader}");
		  if [ "${sig}" = 'GRUB' ] ; then
		     sig2=$(hexdump -v -n 2 -e '/1 "%02x"' "${mountname}${file}${loader}");
		     # Distinguish Grub Legacy and Grub2 (v1.96) by the first two bytes.
		     case "${sig2}" in
		       eb48) stage2_loc "${mountname}${file}${loader}";
			     BFI="${BFI} Grub Legacy (v${Grub_Version}) in the file ${file}${loader} ${Stage2_Msg}";;
		       eb4c) grub2_info "${mountname}${file}${loader}" ${drive} 1.96 'file';
			     BFI="${BFI} Grub2 (v1.96) in the file ${file}${loader} ${Grub2_Msg}.";;
		       eb63) grub2_info "${mountname}${file}${loader}" ${drive} 1.99 'file';
			     BFI="${BFI} Grub2 (v1.99) in the file ${file}${loader} ${Grub2_Msg}.";;
		     esac
		  fi
		  # Grub2 (v1.97-1.98) has "GRUB" written at 0x188.
		  sig=$(hexdump -v -s 392 -n 4  -e '4/1 "%_p"' "${mountname}${file}${loader}");
		  if [ "${sig}" = 'GRUB' ]; then
		     grub2_info "${mountname}${file}${loader}" ${drive} 1.97-1.98 'file';
		     BFI="${BFI} Grub2 (v1.97-1.98) in the file ${file}${loader} ${Grub2_Msg}."; 
		  fi
		  # Grub2 (v2.00) has "GRUB" written at 0x180.
		  sig=$(hexdump -v -s 384 -n 4  -e '4/1 "%_p"' "${mountname}${file}${loader}");
		  if [ "${sig}" = 'GRUB' ]; then
		     grub2_info "${mountname}${file}${loader}" ${drive} 2.00 'file';
		     BFI="${BFI} Grub2 (v2.00) in the file ${file}${loader} ${Grub2_Msg}."; 
		  fi
	       fi
	     done	# End of loop through the files in a particular Boot_Code_Directory.
	  fi
	done		# End of the loop through the Boot_Code_Directories.
     # If partition failed to mount.
     else
	printf "    Mounting failed:   " >> "${Log}";  
	cat ${Mount_Error} >> "${Log}"; 
     fi		# End of Mounting "if then else".
  fi	  	# End of Partition Type "if then else".
  echo >> "${Log}";

}	# End Get_Partition_Info function

## Start ##
# Center title.
BIS_title=$(printf 'Boot MBR Script %s      [%s]' "${VERSION}" "${RELEASE_DATE}");
## Cette séquence est nécessaire pour imprimer le contenu du MBR
## Si on n'obtient pas la taille du disque, le contenu du MBR n'est pas édité
## qui plus est, il y a un controle pour ne pas lire au-dela de cette valeur. Si on met une énorme valeur, cela ne marche pas non plus. Elle doit donc être bonne.
##   Cela oblige à travailler en mode SUDO...

# Search for hard drives which don't exist, have a corrupted partition table
# or don't have a parition table (whole drive is a filesystem).
# Information on all hard drives which a valid partition table are stored in 
# the hard drives arrays: HD?????
# id for Filesystem Drives.
FSD=0;
# Clear blkid cache
blkid -g;
for drive in ${All_Hard_Drives} ; do
 size=$(fdisks ${drive});
   PrintBlkid ${drive};
  if [ 0 -lt ${size} 2>> ${Trash} ] ; then
   if [ x"$(blkid  ${drive})" = x'' ] || [ x"$(blkid  | grep ${drive}:)" = x'' ] ; then
	# Drive is not a filesytem.
	size=$((2*size));
	HDName[${HI}]=${drive};
	HDSize[${HI}]=${size};
	# Get and set HDHead[${HI}], HDTrack[${HI}] and HDCylinder[${HI}] all at once.
	eval $(fdisk -lu ${drive} 2>> ${Trash} | ${AWK} -F ' ' '$2 ~ "head" { print "HDHead['${HI}']=" $1 "; HDTrack['${HI}']=" $3 "; HDCylinder['${HI}']=" $5 }' );
	# Look at the first 4 bytes of the second sector to identify the partition table type.
	case $(hexdump -v -s 512 -n 4 -e '"%_u"' ${drive}) in
	  'EMBR') HDPT[${HI}]='BootIt';;
	  'EFI ') HDPT[${HI}]='EFI';;
	       *) HDPT[${HI}]='MSDos';;
	esac
	HI=$((${HI}+1));
     else
        # Drive is a filesystem.
        if [ $( expr match "$(BlkidTag "${drive}" TYPE)" '.*raid') -eq 0 ] || [ x"$(BlkidTag "${drive}" UUID)" != x'' ] ; then
	   FilesystemDrives[${FSD}]="${drive}";
	   ((FSD++));
	fi
    fi
  else
     printf "$(basename ${drive}) " >> ${FakeHardDrives};
cho "MBR 23-c"
  fi
done
## Identify the MBR of each hard drive. ##
echo 'Identifions les MBRs...';
for HI in ${!HDName[@]} ; do 
  drive="${HDName[${HI}]}";
  Message="est installé dans le MBR de ${drive}";
  # Read the whole MBR in hexadecimal format.
  MBR_512=$(hexdump -v -n 512 -e '/1 "%02x"' ${drive});
  ## Look at the first 2,3,4 or 8 bytes of the hard drive to identify the boot code installed in the MBR. ##
  #   If it is not enough, look at more bytes.
  MBR_sig2="${MBR_512:0:4}";
  MBR_sig3="${MBR_512:0:6}";
  MBR_sig4="${MBR_512:0:8}";
  MBR_sig8="${MBR_512:0:16}";
  ## Bytes 0x80-0x81 of the MBR. ##
  #   Use it to differentiate between different versions of the same bootloader.
  MBR_bytes80to81="${MBR_512:256:4}";
  BL=;
  case ${MBR_sig2} in
    eb48) ## Grub Legacy is in the MBR. ##
	  BL="Grub Legacy";
	  # 0x44 contains the offset to the next stage.
	  offset=$(hexdump -v -s 68 -n 4 -e '"%u"' ${drive});
	  if [ "${offset}" -ne 1 ] ; then
	     # Grub Legacy is installed without stage1.5 files.
	     stage2_loc ${drive};
	     Message="${Message} and-A ${Stage2_Msg}";
	  else
	     # Grub is installed with stage1.5 files.
	     Grub_String=$(hexdump -v -s 1042 -n 94 -e '"%_u"' ${drive});
	     Grub_Version="${Grub_String%%nul*}";
	     BL="Grub Legacy (v${Grub_Version})";
	     tmp="/${Grub_String#*/}";
	     tmp="${tmp%%nul*}";
	     eval $(echo ${tmp} | ${AWK} '{ print "stage=" $1 "; menu=" $2 }');
	     [[ x"$menu" = x'' ]] || stage="${stage} and-B ${menu}";
	     part_info=$((1045 + ${#Grub_Version}));
	     eval $(hexdump -v -s ${part_info} -n 2 -e '1/1 "pa=%u; " 1/1 "dr=%u"' ${drive});
	     dr=$(( ${dr} - 127 ));
	     pa=$(( ${pa} + 1 ));
	     if [ "${dr}" -eq 128 ] ; then
		Message="${Message} and looks on the same drive in partition #${pa} for ${stage}";
	     else
		Message="${Message} and looks on boot drive #${dr} in partition #${pa} for ${stage}";
	     fi
	  fi;;
    eb4c) ## Grub2 (v1.96) is in the MBR. ##
	  BL='Grub2 (v1.96)';
	  grub2_info ${drive} ${drive} '1.96' 'disk';
	  Message="${Message} and-C ${Grub2_Msg}";;
    eb63) ## Grub2 is in the MBR. ##
	  case ${MBR_bytes80to81} in
		7c3c) grub2_version='1.97-1.98'; BL='Grub2 (v1.97-1.98)';;
		0020) grub2_version='1.99-2.00'; BL='Grub2 (v1.99-2.00)';;
	  esac
	  grub2_info ${drive} ${drive} ${grub2_version} 'disk';
	  # Set a more exact version number (1.99 or 2.00), if '1.99-2.00' was
	  # passed to the grub2_info function.
	  BL="Grub2 (v${grub2_version})";
	  Message="${Message} et ${Grub2_Msg}";;
    0ebe) BL='ThinkPad';;
    31c0) # Look at the first 8 bytes of the hard drive to identify the boot code installed in the MBR.
	  case ${MBR_sig8} in
	    31c08ed0bc007c8e) BL='NetBSD/SUSE generic MBR';;
	    31c08ed0bc007cfb) BL='Acer PQService MBR';;
	  esac;;
    33c0) # Look at the first 3 bytes of the hard drive to identify the boot code installed in the MBR.
	  case ${MBR_sig3} in
	    33c08e) BL='Windows';
		    case ${MBR_sig8} in
		      33c08ed0bc007cfb) BL='Windows 2000/XP/2003';;
		      33c08ed0bc007c8e)
					# Look at byte 0xF0-F1: different offset for "TCPA" string.
					case "${MBR_512:480:4}" in
					  fb54) BL='Windows Vista';;
					  4350) BL='Windows 7/8/2012';;
					esac;;
		    esac;;
	    33c090) BL='DiskCryptor';;
	    33c0fa) # Look at bytes 0x5B-5D: different offsets for jump target
	      case ${MBR_512:182:6} in
		0fb6c6) BL='Syslinux GPTMBR (5.10 and higher)';;
		bb007c) BL='Syslinux GPTMBR (4.04-5.01)';;
		e82101) BL='Syslinux MBR (4.04-4.07)';;
		e83501) BL='Syslinux MBR (5.00 and higher)';;
	      esac;;
	  esac;;
    33ed) # Look at bytes 0x80-0x81 to be more specific about the Syslinux variant/version.
	  case ${MBR_bytes80to81} in
	    407c) BL='ISOhybrid (Syslinux 4.04)';;
	    83e1) BL='ISOhybrid with partition support (Syslinux 4.04)';;
	    cd13) BL='ISOhybrid with partition support (Syslinux 4.05 and higher)';;
	    f7e1) BL='ISOhybrid (Syslinux 4.05 and higher)';;
	  esac;;
    33ff) BL='HP/Gateway';;
    b800) BL='Plop';;
    ea05)
	  case ${MBR_sig3} in
	    ea0500) BL='OpenBSD generic MBR';;
	    ea0501) BL='XOSL';;
	  esac;;
    ea1e) BL='Truecrypt Boot Loader';;
    eb04) BL='Solaris';;
    eb31) BL='Paragon';;
    eb5e) # Look at the first 3 bytes of the hard drive to identify the boot code installed in the MBR.
	  case ${MBR_sig3} in
	    eb5e00) BL='fbinst';;
	    eb5e80) BL='Grub4Dos';;
	    eb5e90) BL='WEE';
		    # Get the embedded menu of WEE.
		    get_embedded_menu "${drive}" "WEE's (${drive})";;
	  esac;;
    fa31) # Look at the first 3 bytes of the hard drive to identify the boot code installed in the MBR.
	  case ${MBR_sig3} in
	    fa31c0) # Look at bytes 0x80-0x81 to be more specific about the Syslinux variant/version.
		    case ${MBR_bytes80to81} in
		      0069) BL='ISOhybrid (Syslinux 3.72-3.73)';;
		      7c66) BL='Syslinux MBR (3.61-4.03)';;
		      7cb8) BL='Syslinux MBR (3.36-3.51)';;
		      b442) BL='Syslinux MBR (3.00-3.35)';;
		      bb00) BL='Syslinux MBR (3.52-3.60)';;
		      e2f8) # Syslinux pre-4.04; look at bytes 0x82-0x84
		            case "${MBR_512:260:6}" in
			      31f65f) BL='Syslinux GPTMBR (4.00-4.03)';;
			      5e5974) BL='Syslinux GPTMBR (3.72-3.73)';;
			      5e5958) # look at bytes 0xe-0xf
			              case "${MBR_512:28:4}" in
				        528e) BL='Syslinux GPTMBR (3.70-3.71)';;
				        8ec0) BL='Syslinux GPTMBR (3.74-4.03)';;
				      esac;;
			    esac;;
		      e879) BL='ISOhybrid (Syslinux 3.74-3.80)';;
		    esac;;
	    fa31c9) BL='Master Boot LoaDeR';;   
	    fa31ed) # Look at bytes 0x80-0x81 to be more specific about the Syslinux variant/version.
		    case ${MBR_bytes80to81} in
		      0069) BL='ISOhybrid (Syslinux 3.72-3.73)';;
		      0fb6) BL='ISOhybrid with partition support (Syslinux 3.82-3.86)';;
		      407c) BL='ISOhybrid (Syslinux 3.82-4.03)';;
		      83e1) BL='ISOhybrid with partition support (Syslinux 4.00-4.03)';;
		      b6c6) BL='ISOhybrid with partition support (Syslinux 3.81)';;
		      fbc0) BL='ISOhybrid (Syslinux 3.81)';;
		    esac;;
	  esac;;
    fa33) BL='MS-DOS 3.30 through Windows 95 (A)';;
    fab8) # Look at the first 4 bytes of the hard drive to identify the boot code installed in the MBR.
	  case ${MBR_sig4} in
	    fab80000) BL='FreeDOS (eXtended FDisk)';;
	    fab80010) BL="libparted MBR boot code";;
	  esac;;
    faeb) BL='Lilo';; 
    fafc) BL='ReactOS';;
    fc31) # Look at the first 8 bytes of the hard drive to identify the boot code installed in the MBR.
	  case ${MBR_sig8} in
	    fc31c08ed031e48e) BL='install-mbr/Testdisk';;
	    fc31c08ec08ed88e) BL='boot0 (FreeBSD)';;
	  esac;;
    fc33) BL='GAG';;
    fceb) BL='BootIt NG';;
    0000) BL='No boot loader';;
  esac
  if [ x"${BL}" = 'x' ] ; then
     BL='No known boot loader';
     printf "Unknown MBR on ${drive}\n\n" >> ${Unknown_MBR};
     hexdump -v -n 512 -C ${drive} >> ${Unknown_MBR};
     echo >> ${Unknown_MBR};
  fi
  ## Output message at beginning of summary that gives MBR info for each drive: ##
  printf ' => ' >> "${Log}";
  printf "${BL} ${Message}.\n" | fold -s -w 75 | sed -e '/^-----\.\?$/ d' -e '2~1s/.*/    &/' >> "${Log}";
  HDMBR[${HI}]=${BL};
done
echo "fin de traitement"
## Write the content of Log1 to the log file. ##
[ -e "${Log1}" ] && cat "${Log1}" >> "${Log}";
if [ ${stdout_output} -eq 1 ] ; then 
   ## If --stdout is specified, show the output.
   echo "Le log temporaire est sous " "${Log}"
   cat "${Log}"
else
   ## Copy the log file to RESULTS file and make the user the owner of RESULTS file. ##
   cp "${Log}"  "${LogFile}";
   printf 'Le resultat est dans le fichier "%s" ' "${LogFile}";
   echo "" 
   cat "${LogFile}"
fi
exit 0;
###

Nota: La durée d'exécution n'a rien à voir avec un vrai boot-info.

Dernière modification par ?? (Le 04/04/2018, à 11:57)


Utiliser REFIND au lieu du GRUB https://doc.ubuntu-fr.org/refind . Aidez à vous faire dépanner en suivant le guide et en utilisant les outils de diagnostic J'ai perdu ma gomme. Désolé pour les fautes d'orthographes non corrigées.

Hors ligne