Kernal Panic - Not syncing: VFS: Unable to mount root fs on unknown block(0,0)

[BlueprintIT]

PLEASE, be aware that I am NOT by any means that experienced with the command line so I may need a little hand-holding/explaining. Sorry for any trouble that may cause.


So I am using a Toshiba Satellite with a 500GB HDD using Ubuntu 10.04. As it turns out, this morning I ok'd the update manager to run a few suggested updates and the update manager frozen then crashed half way through an update (which file, I do not know)

I was able to continue using Ubuntu and nothing was amiss. I left a client site and shut down the laptop. When I got back to the office, I received the error message in the title when trying to boot the laptop.

I tried following a few different solutions but have been unable to fix my installation. I have MANY client and personal files I can not afford to lose. Most are backed up but I have a few client files I CAN NOT lose so reinstallation is not an option at all.

I grabbed an Ubuntu LiveDVD 11.10 and ran the bootinfoscript file. Here are the results. ANY help is appreciated.


FULL DISCLOSURE: I did make a mistake and only give 50MB to the BOOT partition (sda1) when I first created this installation. Yeah, newbie mistake. In any case, since my installation is messed up, and I had a liveCD running, I figured I should at least fix this using gparted, resize my main storage partition, and give the BOOT partition a nice 5GB of space. It's not like I'm hurting for room on this HDD since this isn't used to download files and the files I do have are documents or spreadsheets. I hope this doesn't complicate fixing this issue.

Boot Info Script 0.61 [1 April 2012]


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

=> Grub2 (v1.97-1.98 ) 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 in partition 1 for /grub.

sda1: __________________________________________________ ________________________

File system: ext4
Boot sector type: -
Boot sector info:
Operating System:
Boot files: /grub/grub.cfg /grub/core.img

sda2: __________________________________________________ ________________________

File system: Extended Partition
Boot sector type: Unknown
Boot sector info:

sda5: __________________________________________________ ________________________

File system: ext4
Boot sector type: -
Boot sector info:
Operating System: Ubuntu 10.04.4 LTS
Boot files: /etc/fstab

sda6: __________________________________________________ ________________________

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

sda7: __________________________________________________ ________________________

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

sda8: __________________________________________________ ________________________

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

sda9: __________________________________________________ ________________________

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

sda10: __________________________________________________ _______________________

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

sda3: __________________________________________________ ________________________

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

sda4: __________________________________________________ ________________________

File system: vfat
Boot sector type: FAT32
Boot sector info: According to the info in the boot sector, sda4 starts
at sector 0. But according to the info from fdisk,
sda4 starts at sector 765802485.
Operating System:
Boot files:

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

Drive: sda __________________________________________________ ___________________

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes

Partition Boot Start Sector End Sector # of Sectors Id System

/dev/sda1 * 63 10,338,303 10,338,241 83 Linux
/dev/sda2 10,338,304 488,378,367 478,040,064 5 Extended
/dev/sda5 10,340,352 20,103,167 9,762,816 83 Linux
/dev/sda6 20,105,216 39,634,943 19,529,728 83 Linux
/dev/sda7 39,636,992 49,399,807 9,762,816 83 Linux
/dev/sda8 49,401,856 59,164,671 9,762,816 83 Linux
/dev/sda9 59,166,720 478,611,455 419,444,736 83 Linux
/dev/sda10 478,613,504 488,376,319 9,762,816 82 Linux swap / Solaris
/dev/sda3 488,392,065 765,802,484 277,410,420 83 Linux
/dev/sda4 765,802,485 976,768,064 210,965,580 b W95 FAT32


"blkid" output: __________________________________________________ ______________

Device UUID TYPE LABEL

/dev/loop0 squashfs
/dev/sda1 13200159-4a5a-453d-a3b8-3f6f75a14e6d ext4
/dev/sda10 f30697d0-8fa4-4e9f-bdee-404f4f2e7311 swap
/dev/sda3 cc972e82-b5f2-4316-939a-21c478ae92b4 ext4 Storage
/dev/sda4 7FDC-5969 vfat Store2
/dev/sda5 fb0caab1-d7a0-480d-9384-8d0cc53ce2f6 ext4
/dev/sda6 4eaef3ce-de4f-4e70-bab9-84b08c23e5ca ext4
/dev/sda7 847ecb1f-69d8-4165-9004-3ac4f61c2bb1 ext4
/dev/sda8 1881734a-2572-4595-9136-8e9260c843ad ext4
/dev/sda9 30abbff2-d904-4f2f-9cdb-ded20a4103b2 ext4

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

Device Mount_Point Type Options

/dev/loop0 /rofs squashfs (ro,noatime)
/dev/sda1 /media/13200159-4a5a-453d-a3b8-3f6f75a14e6d ext4 (rw,nosuid,nodev,uhelper=udisks)
/dev/sda1 /mnt/drive ext4 (rw)
/dev/sda1 /mnt ext4 (rw)
/dev/sda3 /media/Storage ext4 (rw,nosuid,nodev,uhelper=udisks)
/dev/sda4 /media/Store2 vfat (rw,nosuid,nodev,uid=999,gid=999,shortname=mixed,d mask=0077,utf8=1,showexec,uhelper=udisks)
/dev/sda5 /media/fb0caab1-d7a0-480d-9384-8d0cc53ce2f6 ext4 (rw,nosuid,nodev,uhelper=udisks)
/dev/sda6 /media/4eaef3ce-de4f-4e70-bab9-84b08c23e5ca ext4 (rw,nosuid,nodev,uhelper=udisks)
/dev/sda7 /media/847ecb1f-69d8-4165-9004-3ac4f61c2bb1 ext4 (rw,nosuid,nodev,uhelper=udisks)
/dev/sda8 /media/1881734a-2572-4595-9136-8e9260c843ad ext4 (rw,nosuid,nodev,uhelper=udisks)
/dev/sda9 /media/30abbff2-d904-4f2f-9cdb-ded20a4103b2 ext4 (rw,nosuid,nodev,uhelper=udisks)
/dev/sr0 /cdrom iso9660 (ro,noatime)


============================= sda1/grub/grub.cfg: ==============================

--------------------------------------------------------------------------------
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/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
load_env
fi
set default="0"
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 ${boot_once} ]; then save_env recordfail; fi; fi
}
insmod ext2
set root='(hd0,6)'
search --no-floppy --fs-uuid --set 4eaef3ce-de4f-4e70-bab9-84b08c23e5ca
if loadfont /share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 13200159-4a5a-453d-a3b8-3f6f75a14e6d
set locale_dir=($root)/grub/locale
set lang=en
insmod gettext
if [ ${recordfail} = 1 ]; then
set timeout=-1
else
set timeout=10
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
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, with Linux 2.6.32-41-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 13200159-4a5a-453d-a3b8-3f6f75a14e6d
linux /vmlinuz-2.6.32-41-generic root=/dev/sda5 ro quiet splash
}
menuentry 'Ubuntu, with Linux 2.6.32-41-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 13200159-4a5a-453d-a3b8-3f6f75a14e6d
echo 'Loading Linux 2.6.32-41-generic ...'
linux /vmlinuz-2.6.32-41-generic root=/dev/sda5 ro single
echo 'Loading initial ramdisk ...'
}
menuentry 'Ubuntu, with Linux 2.6.32-40-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 13200159-4a5a-453d-a3b8-3f6f75a14e6d
linux /vmlinuz-2.6.32-40-generic root=UUID=fb0caab1-d7a0-480d-9384-8d0cc53ce2f6 ro quiet splash
initrd /initrd.img-2.6.32-40-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-40-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 13200159-4a5a-453d-a3b8-3f6f75a14e6d
echo 'Loading Linux 2.6.32-40-generic ...'
linux /vmlinuz-2.6.32-40-generic root=UUID=fb0caab1-d7a0-480d-9384-8d0cc53ce2f6 ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-40-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-33-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 13200159-4a5a-453d-a3b8-3f6f75a14e6d
linux /vmlinuz-2.6.32-33-generic root=UUID=fb0caab1-d7a0-480d-9384-8d0cc53ce2f6 ro quiet splash
initrd /initrd.img-2.6.32-33-generic
}
menuentry 'Ubuntu, with Linux 2.6.32-33-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 13200159-4a5a-453d-a3b8-3f6f75a14e6d
echo 'Loading Linux 2.6.32-33-generic ...'
linux /vmlinuz-2.6.32-33-generic root=UUID=fb0caab1-d7a0-480d-9384-8d0cc53ce2f6 ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-33-generic
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 13200159-4a5a-453d-a3b8-3f6f75a14e6d
linux16 /memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod ext2
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 13200159-4a5a-453d-a3b8-3f6f75a14e6d
linux16 /memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
if [ ${timeout} != -1 ]; then
if keystatus; then
if keystatus --shift; then
set timeout=-1
else
set timeout=0
fi
else
if sleep --interruptible 3 ; then
set timeout=0
fi
fi
fi
### END /etc/grub.d/30_os-prober ###

### 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 ###
--------------------------------------------------------------------------------

=================== sda1: Location of files loaded by Grub: ====================

GiB - GB File Fragment(s)

0.008904934 = 0.009561600 grub/core.img 1
0.011275768 = 0.012107264 grub/grub.cfg 1
0.045928478 = 0.049315328 initrd.img-2.6.32-33-generic 2
0.039093494 = 0.041976320 initrd.img-2.6.32-40-generic 6
0.029431820 = 0.031602176 vmlinuz-2.6.32-33-generic 1
0.035063267 = 0.037648896 vmlinuz-2.6.32-40-generic 1
0.047847271 = 0.051375616 vmlinuz-2.6.32-41-generic 5

=============================== sda5/etc/fstab: ================================

--------------------------------------------------------------------------------
# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' 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>
proc /proc proc nodev,noexec,nosuid 0 0
# / was on /dev/sda5 during installation
UUID=fb0caab1-d7a0-480d-9384-8d0cc53ce2f6 / ext4 errors=remount-ro 0 1
# /boot was on /dev/sda1 during installation
UUID=13200159-4a5a-453d-a3b8-3f6f75a14e6d /boot ext4 defaults 0 2
# /home was on /dev/sda9 during installation
UUID=30abbff2-d904-4f2f-9cdb-ded20a4103b2 /home ext4 defaults 0 2
# /tmp was on /dev/sda8 during installation
UUID=1881734a-2572-4595-9136-8e9260c843ad /tmp ext4 defaults 0 2
# /usr was on /dev/sda6 during installation
UUID=4eaef3ce-de4f-4e70-bab9-84b08c23e5ca /usr ext4 defaults 0 2
# /var was on /dev/sda7 during installation
UUID=847ecb1f-69d8-4165-9004-3ac4f61c2bb1 /var ext4 defaults 0 2
# swap was on /dev/sda10 during installation
UUID=f30697d0-8fa4-4e9f-bdee-404f4f2e7311 none swap sw 0 0
--------------------------------------------------------------------------------

======================== Unknown MBRs/Boot Sectors/etc: ========================

Unknown BootLoader on sda2

00000000 20 20 20 20 20 20 3c 70 72 6f 70 20 6f 6f 72 3a | <prop oor
00000010 6e 61 6d 65 3d 22 4e 61 6d 65 22 3e 0a 20 20 20 |name="Name">. |
00000020 20 20 20 20 20 20 20 3c 76 61 6c 75 65 20 78 6d | <value xm|
00000030 6c 3a 6c 61 6e 67 3d 22 65 6e 2d 55 53 22 3e 35 |l:lang="en-US">5|
00000040 39 32 35 20 57 68 69 74 65 20 4c 61 73 65 72 20 |925 White Laser |
00000050 4c 61 62 65 6c 73 20 66 6f 72 20 5a 69 70 20 44 |Labels for Zip D|
00000060 69 73 6b 73 20 28 66 61 63 65 29 3c 2f 76 61 6c |isks (face)</val|
00000070 75 65 3e 0a 20 20 20 20 20 20 20 20 3c 2f 70 72 |ue>. </pr|
00000080 6f 70 3e 0a 20 20 20 20 20 20 20 20 3c 70 72 6f |op>. <pro|
00000090 70 20 6f 6f 72 3a 6e 61 6d 65 3d 22 4d 65 61 73 |p oor:name="Meas|
000000a0 75 72 65 22 3e 0a 20 20 20 20 20 20 20 20 20 20 |ure">. |
000000b0 3c 76 61 6c 75 65 3e 53 3b 39 31 38 32 3b 38 34 |<value>S;9182;84|
000000c0 31 32 3b 35 39 35 36 3b 35 30 38 30 3b 33 32 32 |12;5956;5080;322|
000000d0 36 3b 31 36 36 39 3b 32 3b 33 3c 2f 76 61 6c 75 |6;1669;2;3</valu|
000000e0 65 3e 0a 20 20 20 20 20 20 20 20 3c 2f 70 72 6f |e>. </pro|
000000f0 70 3e 0a 20 20 20 20 20 20 3c 2f 6e 6f 64 65 3e |p>. </node>|
00000100 0a 20 20 20 20 20 20 3c 6e 6f 64 65 20 6f 6f 72 |. <node oor|
00000110 3a 6e 61 6d 65 3d 22 4c 34 37 22 20 6f 6f 72 3a |:name="L47" oor
00000120 6f 70 3d 22 72 65 70 6c 61 63 65 22 20 6f 6f 72 |op="replace" oor|
00000130 3a 66 69 6e 61 6c 69 7a 65 64 3d 22 74 72 75 65 |:finalized="true|
00000140 22 3e 0a 20 20 20 20 20 20 20 20 3c 70 72 6f 70 |">. <prop|
00000150 20 6f 6f 72 3a 6e 61 6d 65 3d 22 4e 61 6d 65 22 | oor:name="Name"|
00000160 3e 0a 20 20 20 20 20 20 20 20 20 20 3c 76 61 6c |>. <val|
00000170 75 65 20 78 6d 6c 3a 6c 61 6e 67 3d 22 65 6e 2d |ue xml:lang="en-|
00000180 55 53 22 3e 35 39 32 35 20 57 68 69 74 65 20 4c |US">5925 White L|
00000190 61 73 65 72 20 4c 61 62 65 6c 73 20 66 6f 72 20 |aser Labels for |
000001a0 5a 69 70 20 44 69 73 6b 73 20 28 74 6f 70 20 73 |Zip Disks (top s|
000001b0 70 69 6e 65 29 3c 2f 76 61 6c 75 65 3e 0a 00 a7 |pine)</value>...|
000001c0 a5 83 83 fe ff ff 00 08 00 00 00 f8 94 00 00 fe |................|
000001d0 ff ff 05 fe ff ff 00 00 95 00 00 08 2a 01 00 00 |............*...|
000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
000001f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 55 aa |..............U.|
00000200


========= Devices which don't seem to have a corresponding hard drive: =========

sdb sdc

[BlueprintIT]

anyone?

[BlueprintIT]

Does anyone have an idea, or would be willing to assist me on this? I have tried various suggestions on this forum, but nothing has worked so far.

[BlueprintIT]

This is vitally important. I don't mean to spam but I absolutely have to have this repaired today ( 6/28 ).

If I would get a better response in another sub-section of the forum, I'd gladly move this thread. I just don't have much experiance so this seemed the best place to post.

I dont mean to sound demanding, but over 100 views and no one is able to help? I'm losing faith in Ubuntu. (Ubuntu/Linux isn't just about the software but the community as well..)

If I have to pull the drive, back up the data and reinstall, I'm not sure I would go back to ubuntu since it is very hard to find help if you have issues.

[BlueprintIT]

Mark this as solved.

I went to IRC Chat and was helped by two GREAT community members who I now owe my continued employement too.

THANK YOU CharlesA and philinux!

Solution:

First I had to reboot my laptop.

Next, as Ubuntu is the only OS on this hard drive and my GRUB menu will not show up during boot, I had to press the "SHIFT" key just after the bios screen, when a blinking cursor in the upper-left corner appeared (same time you would press "F8" to get the boot options menu in a Windows installation).

I selected an older kernal and booted into it.

Then, I ran the following commands in the Terminal:

sudo update-initramfs -u -k 2.6.32-41-generic

(if you have the same issue, use the version number that you are trying to repair)

sudo update-grub2

The commands repaired my broken linux install and my JOB IS SAVED!

To other newbies that need immediate help, use the IRC chat. Go to #Ubuntu (the support room) and POLITELY ask if someone could help you and then state your problem.

It worked great for me. I found the forums are not the best place to try and get support in a timely manner.

[CharlesA]

Glad you were able to get it working.

Here's the full solution on askubuntu:
http://askubuntu.com/questions/41930...known-block0-0