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#1 Le 12/11/2018, à 19:58

Clim_s

[Résolu] kernel panic-not syncing: VFS: unable to mount root fs

Bonjour,

Je viens d'installer Ubuntu sur mon PC en dual boot Windows/Ubuntu avec partition de mon disque dur en 4 partitions: une Windows (NTFS), une Ubuntu (ext4), une données (ext4), une swap.
J'ai eu un premier problème de grubrescue au premier démarrage réglé en utilisant boot repair sur une session live.

Je ne peux plus démarrer sur Ubuntu depuis sans avoir ce message:
"kernel panic-not syncing: VFS: unable to mount root fs on unknown block(0,0) "

J'ai utilisé de nouveaux Boot repair sans succès. J'ai bien lu quelques post sur le sujet de kernel panic mais n'est pas trouvé de correspondance avec mon problème.

Quelqu'un a-t-il la solution?

Merci d'avance !

Dernière modification par Clim_s (Le 17/11/2018, à 14:02)

Hors ligne

#2 Le 12/11/2018, à 20:03

lucmars

Re : [Résolu] kernel panic-not syncing: VFS: unable to mount root fs

Depuis ton support live audites ton disque avec smartmontools (voir la doc)

Tu colleras ici son rapport entre les balises codes.

Hors ligne

#3 Le 13/11/2018, à 00:32

Clim_s

Re : [Résolu] kernel panic-not syncing: VFS: unable to mount root fs

voila ce que recupere comme info sur le disque par SMART.

#
=== START OF INFORMATION SECTION ===
Model Family:     Seagate Momentus 5400.6
Device Model:     ST9500325AS
Serial Number:    5VES6APD
LU WWN Device Id: 5 000c50 0496576e2
Firmware Version: D005DEM1
User Capacity:    500,107,862,016 bytes [500 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    5400 rpm
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS T13/1699-D revision 4
SATA Version is:  SATA 2.6, 3.0 Gb/s
Local Time is:    Mon Nov 12 22:28:29 2018 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

=== START OF ENABLE/DISABLE COMMANDS SECTION ===
SMART Enabled.

=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED

General SMART Values:
Offline data collection status:  (0x82)	Offline data collection activity
					was completed without error.
					Auto Offline Data Collection: Enabled.
Self-test execution status:      (   0)	The previous self-test routine completed
					without error or no self-test has ever 
					been run.
Total time to complete Offline 
data collection: 		(    0) seconds.
Offline data collection
capabilities: 			 (0x7b) SMART execute Offline immediate.
					Auto Offline data collection on/off support.
					Suspend Offline collection upon new
					command.
					Offline surface scan supported.
					Self-test supported.
					Conveyance Self-test supported.
					Selective Self-test supported.
SMART capabilities:            (0x0003)	Saves SMART data before entering
					power-saving mode.
					Supports SMART auto save timer.
Error logging capability:        (0x01)	Error logging supported.
					General Purpose Logging supported.
Short self-test routine 
recommended polling time: 	 (   2) minutes.
Extended self-test routine
recommended polling time: 	 ( 137) minutes.
Conveyance self-test routine
recommended polling time: 	 (   3) minutes.
SCT capabilities: 	       (0x103f)	SCT Status supported.
					SCT Error Recovery Control supported.
					SCT Feature Control supported.
					SCT Data Table supported.

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   116   099   006    Pre-fail  Always       -       100978646
  3 Spin_Up_Time            0x0003   099   099   085    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   098   098   020    Old_age   Always       -       2831
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x000f   081   060   030    Pre-fail  Always       -       144917762
  9 Power_On_Hours          0x0032   097   097   000    Old_age   Always       -       3309
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   098   098   020    Old_age   Always       -       2826
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   100   100   000    Old_age   Always       -       0
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   071   054   045    Old_age   Always       -       29 (Min/Max 20/29)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       18
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       14
193 Load_Cycle_Count        0x0032   085   085   000    Old_age   Always       -       30552
194 Temperature_Celsius     0x0022   029   046   000    Old_age   Always       -       29 (0 10 0 0 0)
195 Hardware_ECC_Recovered  0x001a   057   047   000    Old_age   Always       -       100978646
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       3212 (212 134 0)
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       1346554798
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       449708808
254 Free_Fall_Sensor        0x0032   001   001   000    Old_age   Always       -       12

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed without error       00%      3180         -
# 2  Short offline       Aborted by host               50%      3154         -
# 3  Short offline       Completed without error       00%      3124         -
# 4  Short offline       Completed without error       00%      3075         -
# 5  Short offline       Completed without error       00%      3013         -
# 6  Short offline       Completed without error       00%      2972         -
# 7  Short offline       Completed without error       00%      2928         -
# 8  Short offline       Completed without error       00%      2866         -
# 9  Short offline       Completed without error       00%      2800         -
#10  Short offline       Completed without error       00%      2754         -
#11  Short offline       Aborted by host               70%      2648         -
#12  Short offline       Aborted by host               90%      2564         -
#13  Short offline       Completed without error       00%      2523         -
#14  Short offline       Aborted by host               90%      2453         -
#15  Short offline       Completed without error       00%      2346         -
#16  Short offline       Completed without error       00%      1754         -
#17  Short offline       Completed without error       00%      1698         -
#18  Short offline       Completed without error       00%      1640         -
#19  Short offline       Completed without error       00%      1619         -
#20  Short offline       Aborted by host               90%      1577         -
#21  Short offline       Aborted by host               90%      1525         -

SMART Selective self-test log data structure revision number 1
 SPAN  MIN_LBA  MAX_LBA  CURRENT_TEST_STATUS
    1        0        0  Not_testing
    2        0        0  Not_testing
    3        0        0  Not_testing
    4        0        0  Not_testing
    5        0        0  Not_testing
Selective self-test flags (0x0):
  After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
#

Modération : merci d'utiliser les balises code (explications ici).

Dernière modification par cqfd93 (Le 13/11/2018, à 09:26)

Hors ligne

#4 Le 13/11/2018, à 20:35

Clim_s

Re : [Résolu] kernel panic-not syncing: VFS: unable to mount root fs

Pour alimenter la discussion, l'URL de Boot Repair qui peut peut-être aider à la résolution du problème :
http://paste.ubuntu.com/p/KNqwmyTZr3/

Je suis complètement bloqué et ne peux démarrer mon PC sous Ubuntu, obligé de rester sous WIndows...

Merci pour votre aide !

Hors ligne

#5 Le 13/11/2018, à 21:07

lucmars

Re : [Résolu] kernel panic-not syncing: VFS: unable to mount root fs

Ton rapport

Boot Info Script 8f991e4 + Boot-Repair extra info      [Boot-Info 25oct2017]


============================= Boot Info Summary: ===============================

 => Grub2 (v2.00) is installed in the MBR of /dev/sda and looks at sector 1 of 
    the same hard drive for core.img. core.img is at this location and looks 
    for (,msdos2)/boot/grub. It also embeds following components:
    
    modules
    ---------------------------------------------------------------------------
    fshelp ext2 part_msdos biosdisk
    ---------------------------------------------------------------------------
 => Syslinux MBR (3.61-4.03) is installed in the MBR of /dev/sdb.

sda1: __________________________________________________________________________

    File system:       ntfs
    Boot sector type:  Windows Vista: NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /bootmgr /Boot/BCD /Windows/System32/winload.exe

sda2: __________________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info: 
    Operating System:  Ubuntu 18.04.1 LTS
    Boot files:        /boot/grub/grub.cfg /etc/fstab 
                       /boot/grub/i386-pc/core.img

sda3: __________________________________________________________________________

    File system:       ext4
    Boot sector type:  -
    Boot sector info: 
    Operating System:  
    Boot files:        

sda4: __________________________________________________________________________

    File system:       swap
    Boot sector type:  -
    Boot sector info: 

sdb1: __________________________________________________________________________

    File system:       vfat
    Boot sector type:  SYSLINUX 4.03 2010-10-22 ........>..sr>..........:...0...~.....~...f...M.f.f....f..0~....>E}.u......
    Boot sector info:  Syslinux looks at sector 95104 of /dev/sdb1 for its 
                       second stage. SYSLINUX is installed in the  directory. 
                       No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /boot/grub/grub.cfg /syslinux.cfg 
                       /EFI/BOOT/grubx64.efi /ldlinux.sys

============================ Drive/Partition Info: =============================

Drive: sda _____________________________________________________________________
Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos

Partition  Boot  Start Sector    End Sector  # of Sectors  Id System

/dev/sda1    *          2,048   244,142,672   244,140,625   7 NTFS / exFAT / HPFS
/dev/sda2         244,144,128   361,330,687   117,186,560  83 Linux
/dev/sda3         361,330,688   957,034,495   595,703,808  83 Linux
/dev/sda4         957,034,496   976,771,071    19,736,576  82 Linux swap / Solaris


Drive: sdb _____________________________________________________________________
Disk /dev/sdb: 14.6 GiB, 15623782400 bytes, 30515200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos

Partition  Boot  Start Sector    End Sector  # of Sectors  Id System

/dev/sdb1    *             48    30,515,199    30,515,152   c W95 FAT32 (LBA)


"blkid" output: ________________________________________________________________

Device           UUID                                   TYPE       LABEL

/dev/loop0                                              squashfs   
/dev/loop1                                              squashfs   
/dev/loop2                                              squashfs   
/dev/loop3                                              squashfs   
/dev/loop4                                              squashfs   
/dev/loop5                                              squashfs   
/dev/loop6                                              squashfs   
/dev/loop7                                              squashfs   
/dev/sda1        841C32FB1C32E836                       ntfs       OS
/dev/sda2        ef9e4edb-b72f-4a90-8d53-106467e1b5ab   ext4       
/dev/sda3        0a4a3cb6-d8da-4a27-9a36-cd2639056af2   ext4       
/dev/sda4        c7e5fced-0e82-47b6-86c7-b059138d9d77   swap       
/dev/sdb1        6A47-D160                              vfat       USB DISK

========================= "ls -l /dev/disk/by-id" output: ======================

total 0
lrwxrwxrwx 1 root root  9 Nov 11 13:28 ata-ST9500325AS_5VES6APD -> ../../sda
lrwxrwxrwx 1 root root 10 Nov 11 13:28 ata-ST9500325AS_5VES6APD-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Nov 11 13:28 ata-ST9500325AS_5VES6APD-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 Nov 11 13:28 ata-ST9500325AS_5VES6APD-part3 -> ../../sda3
lrwxrwxrwx 1 root root 10 Nov 11 13:28 ata-ST9500325AS_5VES6APD-part4 -> ../../sda4
lrwxrwxrwx 1 root root  9 Nov 11 13:09 ata-TSSTcorp_DVD+_-RW_TS-U633J_R7216GUC200HA6 -> ../../sr0
lrwxrwxrwx 1 root root  9 Nov 11 13:15 usb-General_USB_Flash_Disk_04SC9W2QNZHADPRQ-0:0 -> ../../sdb
lrwxrwxrwx 1 root root 10 Nov 11 13:15 usb-General_USB_Flash_Disk_04SC9W2QNZHADPRQ-0:0-part1 -> ../../sdb1
lrwxrwxrwx 1 root root  9 Nov 11 13:28 wwn-0x5000c500496576e2 -> ../../sda
lrwxrwxrwx 1 root root 10 Nov 11 13:28 wwn-0x5000c500496576e2-part1 -> ../../sda1
lrwxrwxrwx 1 root root 10 Nov 11 13:28 wwn-0x5000c500496576e2-part2 -> ../../sda2
lrwxrwxrwx 1 root root 10 Nov 11 13:28 wwn-0x5000c500496576e2-part3 -> ../../sda3
lrwxrwxrwx 1 root root 10 Nov 11 13:28 wwn-0x5000c500496576e2-part4 -> ../../sda4

================================ Mount points: =================================

Device           Mount_Point              Type       Options

/dev/loop0       /rofs                    squashfs   (ro,noatime)
/dev/sdb1        /cdrom                   vfat       (ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)


=========================== sda2/boot/grub/grub.cfg: ===========================

--------------------------------------------------------------------------------
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  set have_grubenv=true
  load_env
fi
if [ "${next_entry}" ] ; then
   set default="${next_entry}"
   set next_entry=
   save_env next_entry
   set boot_once=true
else
   set default="0"
fi

if [ x"${feature_menuentry_id}" = xy ]; then
  menuentry_id_option="--id"
else
  menuentry_id_option=""
fi

export menuentry_id_option

if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}
function recordfail {
  set recordfail=1
  if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
  if [ x$feature_all_video_module = xy ]; then
    insmod all_video
  else
    insmod efi_gop
    insmod efi_uga
    insmod ieee1275_fb
    insmod vbe
    insmod vga
    insmod video_bochs
    insmod video_cirrus
  fi
}

if [ x$feature_default_font_path = xy ] ; then
   font=unicode
else
insmod part_msdos
insmod ext2
set root='hd0,msdos2'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2  ef9e4edb-b72f-4a90-8d53-106467e1b5ab
else
  search --no-floppy --fs-uuid --set=root ef9e4edb-b72f-4a90-8d53-106467e1b5ab
fi
    font="/usr/share/grub/unicode.pf2"
fi

if loadfont $font ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
  set locale_dir=$prefix/locale
  set lang=C
  insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ] ; then
  set timeout=10
else
  if [ x$feature_timeout_style = xy ] ; then
    set timeout_style=hidden
    set timeout=10
  # Fallback hidden-timeout code in case the timeout_style feature is
  # unavailable.
  elif sleep --interruptible 10 ; then
    set timeout=10
  fi
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
if background_color 44,0,30,0; then
  clear
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
function gfxmode {
	set gfxpayload="${1}"
	if [ "${1}" = "keep" ]; then
		set vt_handoff=vt.handoff=1
	else
		set vt_handoff=
	fi
}
if [ "${recordfail}" != 1 ]; then
  if [ -e ${prefix}/gfxblacklist.txt ]; then
    if hwmatch ${prefix}/gfxblacklist.txt 3; then
      if [ ${match} = 0 ]; then
        set linux_gfx_mode=keep
      else
        set linux_gfx_mode=text
      fi
    else
      set linux_gfx_mode=text
    fi
  else
    set linux_gfx_mode=keep
  fi
else
  set linux_gfx_mode=text
fi
export linux_gfx_mode
menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-simple-ef9e4edb-b72f-4a90-8d53-106467e1b5ab' {
	recordfail
	load_video
	gfxmode $linux_gfx_mode
	insmod gzio
	if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
	insmod part_msdos
	insmod ext2
	set root='hd0,msdos2'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2  ef9e4edb-b72f-4a90-8d53-106467e1b5ab
	else
	  search --no-floppy --fs-uuid --set=root ef9e4edb-b72f-4a90-8d53-106467e1b5ab
	fi
        linux	/boot/vmlinuz-4.15.0-38-generic root=/dev/sda2 ro  quiet splash $vt_handoff
}
submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-advanced-ef9e4edb-b72f-4a90-8d53-106467e1b5ab' {
	menuentry 'Ubuntu, with Linux 4.15.0-38-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.15.0-38-generic-advanced-ef9e4edb-b72f-4a90-8d53-106467e1b5ab' {
		recordfail
		load_video
		gfxmode $linux_gfx_mode
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_msdos
		insmod ext2
		set root='hd0,msdos2'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2  ef9e4edb-b72f-4a90-8d53-106467e1b5ab
		else
		  search --no-floppy --fs-uuid --set=root ef9e4edb-b72f-4a90-8d53-106467e1b5ab
		fi
		echo	'Loading Linux 4.15.0-38-generic ...'
	        linux	/boot/vmlinuz-4.15.0-38-generic root=/dev/sda2 ro  quiet splash $vt_handoff
	}
	menuentry 'Ubuntu, with Linux 4.15.0-38-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.15.0-38-generic-recovery-ef9e4edb-b72f-4a90-8d53-106467e1b5ab' {
		recordfail
		load_video
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_msdos
		insmod ext2
		set root='hd0,msdos2'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2  ef9e4edb-b72f-4a90-8d53-106467e1b5ab
		else
		  search --no-floppy --fs-uuid --set=root ef9e4edb-b72f-4a90-8d53-106467e1b5ab
		fi
		echo	'Loading Linux 4.15.0-38-generic ...'
	        linux	/boot/vmlinuz-4.15.0-38-generic root=/dev/sda2 ro recovery nomodeset 
	}
	menuentry 'Ubuntu, with Linux 4.15.0-29-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.15.0-29-generic-advanced-ef9e4edb-b72f-4a90-8d53-106467e1b5ab' {
		recordfail
		load_video
		gfxmode $linux_gfx_mode
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_msdos
		insmod ext2
		set root='hd0,msdos2'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2  ef9e4edb-b72f-4a90-8d53-106467e1b5ab
		else
		  search --no-floppy --fs-uuid --set=root ef9e4edb-b72f-4a90-8d53-106467e1b5ab
		fi
		echo	'Loading Linux 4.15.0-29-generic ...'
	        linux	/boot/vmlinuz-4.15.0-29-generic root=UUID=ef9e4edb-b72f-4a90-8d53-106467e1b5ab ro  quiet splash $vt_handoff
		echo	'Loading initial ramdisk ...'
		initrd	/boot/initrd.img-4.15.0-29-generic
	}
	menuentry 'Ubuntu, with Linux 4.15.0-29-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-4.15.0-29-generic-recovery-ef9e4edb-b72f-4a90-8d53-106467e1b5ab' {
		recordfail
		load_video
		insmod gzio
		if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
		insmod part_msdos
		insmod ext2
		set root='hd0,msdos2'
		if [ x$feature_platform_search_hint = xy ]; then
		  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2  ef9e4edb-b72f-4a90-8d53-106467e1b5ab
		else
		  search --no-floppy --fs-uuid --set=root ef9e4edb-b72f-4a90-8d53-106467e1b5ab
		fi
		echo	'Loading Linux 4.15.0-29-generic ...'
	        linux	/boot/vmlinuz-4.15.0-29-generic root=UUID=ef9e4edb-b72f-4a90-8d53-106467e1b5ab ro recovery nomodeset 
		echo	'Loading initial ramdisk ...'
		initrd	/boot/initrd.img-4.15.0-29-generic
	}
}

### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###

### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry 'Memory test (memtest86+)' {
	insmod part_msdos
	insmod ext2
	set root='hd0,msdos2'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2  ef9e4edb-b72f-4a90-8d53-106467e1b5ab
	else
	  search --no-floppy --fs-uuid --set=root ef9e4edb-b72f-4a90-8d53-106467e1b5ab
	fi
	knetbsd	/boot/memtest86+.elf
}
menuentry 'Memory test (memtest86+, serial console 115200)' {
	insmod part_msdos
	insmod ext2
	set root='hd0,msdos2'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos2 --hint-efi=hd0,msdos2 --hint-baremetal=ahci0,msdos2  ef9e4edb-b72f-4a90-8d53-106467e1b5ab
	else
	  search --no-floppy --fs-uuid --set=root ef9e4edb-b72f-4a90-8d53-106467e1b5ab
	fi
	linux16	/boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry 'Windows 7 (on /dev/sda1)' --class windows --class os $menuentry_id_option 'osprober-chain-841C32FB1C32E836' {
	insmod part_msdos
	insmod ntfs
	set root='hd0,msdos1'
	if [ x$feature_platform_search_hint = xy ]; then
	  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1  841C32FB1C32E836
	else
	  search --no-floppy --fs-uuid --set=root 841C32FB1C32E836
	fi
	parttool ${root} hidden-
	chainloader +1
}
set timeout_style=menu
if [ "${timeout}" = 0 ]; then
  set timeout=10
fi
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/30_uefi-firmware ###
### END /etc/grub.d/30_uefi-firmware ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  ${config_directory}/custom.cfg ]; then
  source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
--------------------------------------------------------------------------------

=============================== sda2/etc/fstab: ================================

--------------------------------------------------------------------------------
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
# / was on /dev/sda2 during installation
UUID=ef9e4edb-b72f-4a90-8d53-106467e1b5ab /               ext4    errors=remount-ro 0       1
# /home was on /dev/sda3 during installation
UUID=0a4a3cb6-d8da-4a27-9a36-cd2639056af2 /home           ext4    defaults        0       2
# swap was on /dev/sda4 during installation
UUID=c7e5fced-0e82-47b6-86c7-b059138d9d77 none            swap    sw              0       0
--------------------------------------------------------------------------------

=================== sda2: Location of files loaded by Grub: ====================

           GiB - GB             File                                 Fragment(s)

 140.567249298 = 150.932934656  boot/grub/grub.cfg                             1
 160.704170227 = 172.554788864  boot/grub/i386-pc/core.img                     1
 140.631954193 = 151.002411008  boot/vmlinuz-4.15.0-29-generic                 1
 162.287979126 = 174.255390720  boot/vmlinuz-4.15.0-38-generic                 1
 162.287979126 = 174.255390720  vmlinuz                                        1
 140.631954193 = 151.002411008  vmlinuz.old                                    1
 161.756042480 = 173.684228096  boot/initrd.img-4.15.0-29-generic              2
 161.756042480 = 173.684228096  initrd.img.old                                 2

=========================== sdb1/boot/grub/grub.cfg: ===========================

--------------------------------------------------------------------------------

if loadfont /boot/grub/font.pf2 ; then
	set gfxmode=auto
	insmod efi_gop
	insmod efi_uga
	insmod gfxterm
	terminal_output gfxterm
fi

set menu_color_normal=white/black
set menu_color_highlight=black/light-gray

set timeout=5
menuentry "Try Ubuntu without installing" {
	set gfxpayload=keep
	linux	/casper/vmlinuz  file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
	initrd	/casper/initrd.lz
}
menuentry "Install Ubuntu" {
	set gfxpayload=keep
	linux	/casper/vmlinuz  file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---
	initrd	/casper/initrd.lz
}
menuentry "OEM install (for manufacturers)" {
	set gfxpayload=keep
	linux	/casper/vmlinuz  file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash oem-config/enable=true ---
	initrd	/casper/initrd.lz
}
menuentry "Check disc for defects" {
	set gfxpayload=keep
	linux	/casper/vmlinuz  boot=casper integrity-check quiet splash ---
	initrd	/casper/initrd.lz
}
--------------------------------------------------------------------------------

============================== sdb1/syslinux.cfg: ==============================

--------------------------------------------------------------------------------
default menu.c32
prompt 0
menu title UNetbootin
timeout 100

label unetbootindefault
menu label Default
kernel /ubnkern
append initrd=/ubninit file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---

label ubnentry0
menu label ^Help
kernel /ubnkern
append initrd=/ubninit 

label ubnentry1
menu label ^Try Ubuntu without installing
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper  quiet splash ---

label ubnentry2
menu label ^Install Ubuntu
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity  quiet splash ---

label ubnentry3
menu label ^Check disc for defects
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz boot=casper integrity-check  quiet splash ---

label ubnentry4
menu label Test ^memory
kernel /install/mt86plus
append initrd=/ubninit 

label ubnentry5
menu label ^Boot from first hard disk
kernel /ubnkern
append initrd=/ubninit 

label ubnentry6
menu label Try Ubuntu without installing
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---

label ubnentry7
menu label Install Ubuntu
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash ---

label ubnentry8
menu label OEM install (for manufacturers)
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity quiet splash oem-config/enable=true ---

label ubnentry9
menu label Check disc for defects
kernel /casper/vmlinuz
append initrd=/casper/initrd.lz boot=casper integrity-check quiet splash ---

--------------------------------------------------------------------------------

=================== sdb1: Location of files loaded by Grub: ====================

           GiB - GB             File                                 Fragment(s)

            ?? = ??             boot/grub/grub.cfg                             1

================= sdb1: Location of files loaded by Syslinux: ==================

           GiB - GB             File                                 Fragment(s)

            ?? = ??             syslinux.cfg                                   1
            ?? = ??             ldlinux.sys                                    1
            ?? = ??             menu.c32                                       1

============== sdb1: Version of COM32(R) files used by Syslinux: ===============

 menu.c32                           :  COM32R module (v4.xx)

=============================== StdErr Messages: ===============================

File descriptor 9 (/proc/5001/mountinfo) leaked on lvs invocation. Parent PID 17585: bash
File descriptor 63 (pipe:[67825]) leaked on lvs invocation. Parent PID 17585: bash

ADDITIONAL INFORMATION :
=================== log of boot-repair 20181111_1314 ===================
boot-repair version : 4ppa65
boot-sav version : 4ppa65
boot-sav-extra version : 4ppa65
glade2script version : 3.2.3~ppa4
boot-repair is executed in live-session (Ubuntu 18.04.1 LTS, bionic, Ubuntu, x86_64)
CPU op-mode(s):      32-bit, 64-bit
initrd=/casper/initrd.lz file=/cdrom/preseed/ubuntu.seed boot=casper  quiet splash --- BOOT_IMAGE=/casper/vmlinuz
ls: cannot access '/home/usr/.config': No such file or directory

=================== os-prober:
/dev/sda1:Windows 7:Windows:chain
/dev/sda2:Ubuntu 18.04.1 LTS (18.04):Ubuntu:linux

=================== blkid:
/dev/sda1: LABEL="OS" UUID="841C32FB1C32E836" TYPE="ntfs" PARTUUID="07f2837e-01"
/dev/sda2: UUID="ef9e4edb-b72f-4a90-8d53-106467e1b5ab" TYPE="ext4" PARTUUID="07f2837e-02"
/dev/sda3: UUID="0a4a3cb6-d8da-4a27-9a36-cd2639056af2" TYPE="ext4" PARTUUID="07f2837e-03"
/dev/sdb1: LABEL="USB DISK" UUID="6A47-D160" TYPE="vfat" PARTUUID="948491a7-01"
/dev/loop0: TYPE="squashfs"
/dev/loop1: TYPE="squashfs"
/dev/loop2: TYPE="squashfs"
/dev/loop3: TYPE="squashfs"
/dev/loop4: TYPE="squashfs"
/dev/loop5: TYPE="squashfs"
/dev/loop6: TYPE="squashfs"
/dev/loop7: TYPE="squashfs"
/dev/sda4: UUID="c7e5fced-0e82-47b6-86c7-b059138d9d77" TYPE="swap" PARTUUID="07f2837e-04"


1 disks with OS, 2 OS : 1 Linux, 0 MacOS, 1 Windows, 0 unknown type OS.


=================== sda2/etc/grub.d/ :
drwxr-xr-x  2 root root    4096 Nov 11 09:09 grub.d
total 80
-rwxr-xr-x 1 root root  9783 Jul 17 18:13 00_header
-rwxr-xr-x 1 root root  6258 Jul 16 15:15 05_debian_theme
-rwxr-xr-x 1 root root 12693 Jul 17 18:13 10_linux
-rwxr-xr-x 1 root root 11298 Jul 17 18:13 20_linux_xen
-rwxr-xr-x 1 root root  1992 Jan 28  2016 20_memtest86+
-rwxr-xr-x 1 root root 12059 Jul 17 18:13 30_os-prober
-rwxr-xr-x 1 root root  1418 Jul 17 18:13 30_uefi-firmware
-rwxr-xr-x 1 root root   214 Jul 17 18:13 40_custom
-rwxr-xr-x 1 root root   216 Jul 17 18:13 41_custom
-rw-r--r-- 1 root root   483 Jul 17 18:13 README




=================== sda2/etc/default/grub :

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"




=================== sda2recordfail=1/grub/grubenv :
recordfail=1




=================== UEFI/Legacy mode:
This live-session is not in EFI-mode.
EFI in dmesg.
[    0.000000] ACPI: UEFI 0x00000000BAFE9000 00003E (v01 DELL   QA09     00000002 PTL  00000002)
[    0.000000] ACPI: UEFI 0x00000000BAFE8000 000042 (v01 PTL    COMBUF   00000001 PTL  00000001)
[    0.000000] ACPI: UEFI 0x00000000BAFE7000 00026A (v01 DELL   QA09     00000002 PTL  00000002)
SecureBoot maybe enabled.


=================== PARTITIONS & DISKS:
sda1	: sda,	not-sepboot,	no-grubenv	nogrub,	no-docgrub,	no-update-grub,	32,	no-boot,	is-os,	not--efi--part,	part-has-no-fstab,	part-has-no-fstab,	no-nt,	haswinload,	no-recov-nor-hid,	bootmgr,	is-winboot,	nopakmgr,	nogrubinstall,	no---usr,	part-has-no-fstab,	not-sep-usr,	standard,	farbios,	notbiosboot, /mnt/boot-sav/sda1.
sda2	: sda,	not-sepboot,	grubenv-ng	grub2,	grub-pc ,	update-grub,	64,	with-boot,	is-os,	not--efi--part,	fstab-without-boot,	fstab-without-efi,	no-nt,	no-winload,	no-recov-nor-hid,	no-bmgr,	notwinboot,	apt-get,	grub-install,	with--usr,	fstab-without-usr,	not-sep-usr,	standard,	farbios,	notbiosboot, /mnt/boot-sav/sda2.
sda3	: sda,	maybesepboot,	no-grubenv	nogrub,	no-docgrub,	no-update-grub,	32,	no-boot,	no-os,	not--efi--part,	part-has-no-fstab,	part-has-no-fstab,	no-nt,	no-winload,	no-recov-nor-hid,	no-bmgr,	notwinboot,	nopakmgr,	nogrubinstall,	no---usr,	part-has-no-fstab,	not-sep-usr,	standard,	farbios,	notbiosboot, /mnt/boot-sav/sda3.

sda	: not-GPT,	BIOSboot-not-needed,	has-no-EFIpart, 	not-usb,	not-mmc, has-os,	2048 sectors * 512 bytes


=================== parted -lm:

BYT;
/dev/sda:500GB:scsi:512:512:msdos:ATA ST9500325AS:;
1:1049kB:125GB:125GB:ntfs::boot;
2:125GB:185GB:60.0GB:ext4::;
3:185GB:490GB:305GB:ext4::;
4:490GB:500GB:10.1GB:linux-swap(v1)::;

BYT;
/dev/sdb:15.6GB:scsi:512:512:msdos:General USB Flash Disk:;
1:24.6kB:15.6GB:15.6GB:fat32::boot, lba;

=================== lsblk:
KNAME TYPE FSTYPE     SIZE LABEL
loop0 loop squashfs   1.8G
loop1 loop squashfs  86.9M
loop2 loop squashfs  34.7M
loop3 loop squashfs 140.9M
loop4 loop squashfs   2.3M
loop5 loop squashfs    13M
loop6 loop squashfs  14.5M
loop7 loop squashfs   3.7M
sda   disk          465.8G
sda1  part ntfs     116.4G OS
sda2  part ext4      55.9G
sda3  part ext4     284.1G
sda4  part swap       9.4G
sdb   disk           14.6G
sdb1  part vfat      14.6G USB DISK
sr0   rom            1024M

KNAME ROTA RO RM STATE   MOUNTPOINT
loop0    1  1  0         /rofs
loop1    1  1  0         /snap/core/4917
loop2    1  1  0         /snap/gtk-common-themes/319
loop3    1  1  0         /snap/gnome-3-26-1604/70
loop4    1  1  0         /snap/gnome-calculator/180
loop5    1  1  0         /snap/gnome-characters/103
loop6    1  1  0         /snap/gnome-logs/37
loop7    1  1  0         /snap/gnome-system-monitor/51
sda      1  0  0 running
sda1     1  0  0         /mnt/boot-sav/sda1
sda2     1  0  0         /mnt/boot-sav/sda2
sda3     1  0  0         /mnt/boot-sav/sda3
sda4     1  0  0         [SWAP]
sdb      1  0  1 running
sdb1     1  0  1         /cdrom
sr0      1  0  1 running


=================== mount:
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=1940404k,nr_inodes=485101,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=392316k,mode=755)
/dev/sdb1 on /cdrom type vfat (ro,noatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
/dev/loop0 on /rofs type squashfs (ro,noatime)
/cow on / type overlay (rw,relatime,lowerdir=//filesystem.squashfs,upperdir=/cow/upper,workdir=/cow/work)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup on /sys/fs/cgroup/unified type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/rdma type cgroup (rw,nosuid,nodev,noexec,relatime,rdma)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=25,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=15664)
mqueue on /dev/mqueue type mqueue (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
tracefs on /sys/kernel/debug/tracing type tracefs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
configfs on /sys/kernel/config type configfs (rw,relatime)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,relatime)
tmpfs on /run/user/999 type tmpfs (rw,nosuid,nodev,relatime,size=392312k,mode=700,uid=999,gid=999)
gvfsd-fuse on /run/user/999/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=999,group_id=999)
/var/lib/snapd/snaps/core_4917.snap on /snap/core/4917 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gtk-common-themes_319.snap on /snap/gtk-common-themes/319 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-3-26-1604_70.snap on /snap/gnome-3-26-1604/70 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-calculator_180.snap on /snap/gnome-calculator/180 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-characters_103.snap on /snap/gnome-characters/103 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-logs_37.snap on /snap/gnome-logs/37 type squashfs (ro,nodev,relatime,x-gdu.hide)
/var/lib/snapd/snaps/gnome-system-monitor_51.snap on /snap/gnome-system-monitor/51 type squashfs (ro,nodev,relatime,x-gdu.hide)
/dev/sda1 on /mnt/boot-sav/sda1 type fuseblk (rw,relatime,user_id=0,group_id=0,allow_other,blksize=4096)
/dev/sda2 on /mnt/boot-sav/sda2 type ext4 (rw,relatime,data=ordered)
/dev/sda3 on /mnt/boot-sav/sda3 type ext4 (rw,relatime,data=ordered)


=================== ls:
/sys/block/sda (filtered):  alignment_offset bdi capability dev device discard_alignment events events_async events_poll_msecs ext_range hidden holders inflight integrity power queue range removable ro sda1 sda2 sda3 sda4 size slaves stat subsystem trace uevent
/sys/block/sdb (filtered):  alignment_offset bdi capability dev device discard_alignment events events_async events_poll_msecs ext_range hidden holders inflight integrity power queue range removable ro sdb1 size slaves stat subsystem trace uevent
/sys/block/sr0 (filtered):  alignment_offset bdi capability dev device discard_alignment events events_async events_poll_msecs ext_range hidden holders inflight integrity power queue range removable ro size slaves stat subsystem trace uevent
/dev (filtered):  autofs block bsg btrfs-control bus cdrom cdrw char console core cpu cpu_dma_latency cuse disk dri drm_dp_aux0 drm_dp_aux1 dvd dvdrw ecryptfs fb0 fd freefall full fuse hpet hugepages hwrng i2c-0 i2c-1 i2c-2 i2c-3 i2c-4 i2c-5 i2c-6 i2c-7 initctl input kmsg kvm lightnvm log mapper mcelog media0 mei0 mem memory_bandwidth mqueue net network_latency network_throughput null port ppp psaux ptmx pts random rfkill rtc rtc0 sda sda1 sda2 sda3 sda4 sdb sdb1 sg0 sg1 sg2 shm snapshot snd sr0 stderr stdin stdout uhid uinput urandom userio v4l vfio vga_arbiter vhci vhost-net vhost-vsock video0 zero
ls /dev/mapper:  control

=================== hexdump -n512 -C /dev/sda1
00000000  eb 52 90 4e 54 46 53 20  20 20 20 00 02 08 00 00  |.R.NTFS    .....|
00000010  00 00 00 00 00 f8 00 00  3f 00 ff 00 00 08 00 00  |........?.......|
00000020  00 00 00 00 80 00 80 00  50 4a 8d 0e 00 00 00 00  |........PJ......|
00000030  00 87 5a 00 00 00 00 00  02 87 4e 00 00 00 00 00  |..Z.......N.....|
00000040  f6 00 00 00 01 00 00 00  36 e8 32 1c fb 32 1c 84  |........6.2..2..|
00000050  00 00 00 00 fa 33 c0 8e  d0 bc 00 7c fb 68 c0 07  |.....3.....|.h..|
00000060  1f 1e 68 66 00 cb 88 16  0e 00 66 81 3e 03 00 4e  |..hf......f.>..N|
00000070  54 46 53 75 15 b4 41 bb  aa 55 cd 13 72 0c 81 fb  |TFSu..A..U..r...|
00000080  55 aa 75 06 f7 c1 01 00  75 03 e9 d2 00 1e 83 ec  |U.u.....u.......|
00000090  18 68 1a 00 b4 48 8a 16  0e 00 8b f4 16 1f cd 13  |.h...H..........|
000000a0  9f 83 c4 18 9e 58 1f 72  e1 3b 06 0b 00 75 db a3  |.....X.r.;...u..|
000000b0  0f 00 c1 2e 0f 00 04 1e  5a 33 db b9 00 20 2b c8  |........Z3... +.|
000000c0  66 ff 06 11 00 03 16 0f  00 8e c2 ff 06 16 00 e8  |f...............|
000000d0  40 00 2b c8 77 ef b8 00  bb cd 1a 66 23 c0 75 2d  |@.+.w......f#.u-|
000000e0  66 81 fb 54 43 50 41 75  24 81 f9 02 01 72 1e 16  |f..TCPAu$....r..|
000000f0  68 07 bb 16 68 70 0e 16  68 09 00 66 53 66 53 66  |h...hp..h..fSfSf|
00000100  55 16 16 16 68 b8 01 66  61 0e 07 cd 1a e9 6a 01  |U...h..fa.....j.|
00000110  90 90 66 60 1e 06 66 a1  11 00 66 03 06 1c 00 1e  |..f`..f...f.....|
00000120  66 68 00 00 00 00 66 50  06 53 68 01 00 68 10 00  |fh....fP.Sh..h..|
00000130  b4 42 8a 16 0e 00 16 1f  8b f4 cd 13 66 59 5b 5a  |.B..........fY[Z|
00000140  66 59 66 59 1f 0f 82 16  00 66 ff 06 11 00 03 16  |fYfY.....f......|
00000150  0f 00 8e c2 ff 0e 16 00  75 bc 07 1f 66 61 c3 a0  |........u...fa..|
00000160  f8 01 e8 08 00 a0 fb 01  e8 02 00 eb fe b4 01 8b  |................|
00000170  f0 ac 3c 00 74 09 b4 0e  bb 07 00 cd 10 eb f2 c3  |..<.t...........|
00000180  0d 0a 41 20 64 69 73 6b  20 72 65 61 64 20 65 72  |..A disk read er|
00000190  72 6f 72 20 6f 63 63 75  72 72 65 64 00 0d 0a 42  |ror occurred...B|
000001a0  4f 4f 54 4d 47 52 20 69  73 20 6d 69 73 73 69 6e  |OOTMGR is missin|
000001b0  67 00 0d 0a 42 4f 4f 54  4d 47 52 20 69 73 20 63  |g...BOOTMGR is c|
000001c0  6f 6d 70 72 65 73 73 65  64 00 0d 0a 50 72 65 73  |ompressed...Pres|
000001d0  73 20 43 74 72 6c 2b 41  6c 74 2b 44 65 6c 20 74  |s Ctrl+Alt+Del t|
000001e0  6f 20 72 65 73 74 61 72  74 0d 0a 00 00 00 00 00  |o restart.......|
000001f0  00 00 00 00 00 00 00 00  80 9d b2 ca 00 00 55 aa  |..............U.|
00000200

=================== df -Th:

Filesystem     Type      Size  Used Avail Use% Mounted on
udev           devtmpfs  1.9G     0  1.9G   0% /dev
tmpfs          tmpfs     384M  1.6M  382M   1% /run
/dev/sdb1      vfat       15G  1.9G   13G  13% /cdrom
/dev/loop0     squashfs  1.8G  1.8G     0 100% /rofs
/cow           overlay   1.9G  361M  1.6G  19% /
tmpfs          tmpfs     1.9G     0  1.9G   0% /dev/shm
tmpfs          tmpfs     5.0M  4.0K  5.0M   1% /run/lock
tmpfs          tmpfs     1.9G     0  1.9G   0% /sys/fs/cgroup
tmpfs          tmpfs     1.9G  4.0K  1.9G   1% /tmp
tmpfs          tmpfs     384M   36K  384M   1% /run/user/999
/dev/loop1     squashfs   87M   87M     0 100% /snap/core/4917
/dev/loop2     squashfs   35M   35M     0 100% /snap/gtk-common-themes/319
/dev/loop3     squashfs  141M  141M     0 100% /snap/gnome-3-26-1604/70
/dev/loop4     squashfs  2.4M  2.4M     0 100% /snap/gnome-calculator/180
/dev/loop5     squashfs   13M   13M     0 100% /snap/gnome-characters/103
/dev/loop6     squashfs   15M   15M     0 100% /snap/gnome-logs/37
/dev/loop7     squashfs  3.8M  3.8M     0 100% /snap/gnome-system-monitor/51
/dev/sda1      fuseblk   117G  114G  3.3G  98% /mnt/boot-sav/sda1
/dev/sda2      ext4       55G  5.0G   47G  10% /mnt/boot-sav/sda2
/dev/sda3      ext4      279G  110M  265G   1% /mnt/boot-sav/sda3

=================== fdisk -l:
Disk /dev/loop0: 1.8 GiB, 1864450048 bytes, 3641504 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop1: 86.9 MiB, 91099136 bytes, 177928 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop2: 34.7 MiB, 36323328 bytes, 70944 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop3: 140.9 MiB, 147722240 bytes, 288520 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop4: 2.3 MiB, 2433024 bytes, 4752 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop5: 13 MiB, 13619200 bytes, 26600 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop6: 14.5 MiB, 15196160 bytes, 29680 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop7: 3.7 MiB, 3887104 bytes, 7592 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x07f2837e

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sda1  *         2048 244142672 244140625 116.4G  7 HPFS/NTFS/exFAT
/dev/sda2       244144128 361330687 117186560  55.9G 83 Linux
/dev/sda3       361330688 957034495 595703808 284.1G 83 Linux
/dev/sda4       957034496 976771071  19736576   9.4G 82 Linux swap / Solaris




Disk /dev/sdb: 14.6 GiB, 15623782400 bytes, 30515200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x948491a7

Device     Boot Start      End  Sectors  Size Id Type
/dev/sdb1  *       48 30515199 30515152 14.6G  c W95 FAT32 (LBA)




=================== Default settings of Boot Repair
The default repair of the Boot-Repair utility would reinstall the grub2 of sda2 into the MBR of sda.
Additional repair would be performed: unhide-bootmenu-10s


=================== Final advice in case of suggested repair


The boot files of [Ubuntu 18.04.1 LTS] are far from the start of the disk. Your BIOS may not detect them. You may want to retry after creating a /boot partition (EXT4, >200MB, start of the disk). This can be performed via tools such as gParted. Then select this partition via the [Separate /boot partition:] option of [Boot Repair]. (https://help.ubuntu.com/community/BootPartition)


=================== User settings
The settings chosen by the user will reinstall the grub2 of sda2 into the MBR of sda, using the following options:     kernel-purge
Additional repair will be performed: unhide-bootmenu-10s


sda1 is 98 % full
Gtk-Message: 13:16:02.704: GtkDialog mapped without a transient parent. This is discouraged.
Nautilus-Share-Message: 13:16:04.958: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.

Nautilus-Share-Message: 13:16:49.439: Called "net usershare info" but it failed: 'net usershare' returned error 255: net usershare: cannot open usershare directory /var/lib/samba/usershares. Error No such file or directory
Please ask your system administrator to enable user sharing.

The sda1 (Windows) partition is still full. This can prevent to start it (e.g. you may get a Power Manager error).
Gtk-Message: 13:17:09.769: GtkDialog mapped without a transient parent. This is discouraged.
chroot /mnt/boot-sav/sda2 apt-get -y update
purge_kernel of sda2
linux-generic available
E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.
DEBCHECK debNG, linux-generic
DEBCHECKLINUX debNG
=================== linux-generic purge cancelled
dpkg-error detected. Please open a terminal then type (or copy-paste) the following command:

sudo chroot "/mnt/boot-sav/sda2" dpkg --configure -a

Then close this window.
Gtk-Message: 13:17:35.689: GtkDialog mapped without a transient parent. This is discouraged.

*******lspci -nnk | grep -iA3 vga
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09)
Subsystem: Dell 2nd Generation Core Processor Family Integrated Graphics Controller [1028:051b]
Kernel driver in use: i915
Kernel modules: i915
*******

grub-install --version
grub-install (GRUB) 2.02-2ubuntu8.7,grub-install (GRUB) 2.

Reinstall the GRUB of sda2 into the MBR of sda
Installing for i386-pc platform.
Installation finished. No error reported.
grub-install /dev/sda: exit code of grub-install /dev/sda:0

chroot /mnt/boot-sav/sda2 update-grub
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.15.0-38-generic
Found linux image: /boot/vmlinuz-4.15.0-29-generic
Found initrd image: /boot/initrd.img-4.15.0-29-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
Found Windows 7 on /dev/sda1
Unhide GRUB boot menu in sda2/boot/grub/grub.cfg

An error occurred during the repair.

You can now reboot your computer.


The boot files of [Ubuntu 18.04.1 LTS] are far from the start of the disk. Your BIOS may not detect them. You may want to retry after creating a /boot partition (EXT4, >200MB, start of the disk). This can be performed via tools such as gParted. Then select this partition via the [Separate /boot partition:] option of [Boot Repair]. (https://help.ubuntu.com/community/BootPartition)

Hors ligne

#6 Le 13/11/2018, à 21:13

lucmars

Re : [Résolu] kernel panic-not syncing: VFS: unable to mount root fs

Pas facile de saisir les rapports smart d'autant que l'implementation constructeur peut etre délirante

ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   116   099   006    Pre-fail  Always       -       100978646
  7 Seek_Error_Rate         0x000f   081   060   030    Pre-fail  Always       -       144917762

mais ces lignes ne diraient rien de bon.
Après il manque quelque secteur comme on voit ici

Device     Boot     Start       End   Sectors   Size Id Type
/dev/sda1  *         2048 244142672 244140625 116.4G  7 HPFS/NTFS/exFAT
/dev/sda2       244144128 361330687 117186560  55.9G 83 Linux

Cela semble etre que dalle mais c'est p'tete là que cela blesse.

Hors ligne

#7 Le 13/11/2018, à 22:45

Clim_s

Re : [Résolu] kernel panic-not syncing: VFS: unable to mount root fs

Du coup qu'est ce qui est problématique ? Sais tu ce que je peux faire pour régler ce problème de kernel panic ?

Hors ligne

#8 Le 14/11/2018, à 20:39

lucmars

Re : [Résolu] kernel panic-not syncing: VFS: unable to mount root fs

Clim_s a écrit :

Du coup qu'est ce qui est problématique ? Sais tu ce que je peux faire pour régler ce problème de kernel panic ?

Pour moi en gras ce serait ton disque dur, mais je ne voudrais pas te fendre d'un disque neuf pour rien ! Aussi j'appelle Houston

Allo Houston, mon diagnostique disque est-il pertinent ?

Hors ligne

#9 Le 14/11/2018, à 20:51

Clim_s

Re : [Résolu] kernel panic-not syncing: VFS: unable to mount root fs

Bon, j'avance lentement mais sûrement. J'ai trouvé un post intéressant sur le sujet:
https://forum.ubuntu-fr.org/viewtopic.php?id=293663

J'ai aussi fait une mise à jour avant ces mésaventures je suis passé d'un noyau 4.15.0-29 à un noyau 4.15.0-38, à peu près la même histoire que dans le post cité mais quelques années plus tard.
J'arrive donc à me booter sans problème avec la version 4.15.0-29 encore accessible à partir de grub.

Par contre, les manip indiquées dans le post ne fonctionne pas.
Une idée ?

Vous aurez remarqué que je suis un bleu dans le domaine.
Merci encore pour les retours.

Hors ligne

#10 Le 17/11/2018, à 13:52

Clim_s

Re : [Résolu] kernel panic-not syncing: VFS: unable to mount root fs

Mon problème a finalement été résolu par une mise à jour du kernel par le gestionnaire de mise à jour de Ubuntu. Une version intermédiaire de Kernel faisait planté le démarrage.

Une grosse frayeur finalement résolu sans trop de problème !

Hors ligne