Ubuntu Installation :: Kernel Panic - Not Syncing: Unable To Mount Root

Apr 29, 2010

Problems arose when I updated today, after not booting(updating) for a couple of days. Message originally said "Kernel panic - not syncing: UFS: Unable to mount root fs on unknown-block(8, 1)"

I get the options to boot too:

2.6.31-21-generic
2.6.31-21-generic(recovery mode)
2.6.31-20-generic
2.6.31-20-generic(recovery mode)

[Code].....

PS - I really don't want to sound like a jerk

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Ubuntu Installation :: VMware Player - Kernel Panic - Not Syncing - VFS - Unable To Mount Root

May 5, 2010

I recently started to use Ubuntu in VWware player on my windows-XP. I installed ubuntu 10.04 few days ago, It was working fine.

Yesterday, I compile a new kernel, kernel 2.6.33 in my vmware ubuntu 10.04. Everything went well till I did reboot. before reboot I use the command "update-grub" to make it compatible to the new kernel. BUT... after rebooting, I have a problem in loading a grub correctly. it gives me following message " [2.149136 ]kernel panic - not syncing: VFS: unable to mount root fs on unknown-block(0,0)" and I can not proceed further. I have my all data on it. I also tried to boot it from live CD but unfortunately, I can't mount the hard disk on it in order to get those data from my old Ubuntu set up.

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Ubuntu Installation :: Can Recover Data After 'kernel Panic Not Syncing Vfs Unable To Mount Root Fs'

Aug 5, 2011

I need to recover some data of the 'home' directory after kernel panic.I was upgrading ubuntu 11.04, [COLOR=blue !important][COLOR=blue !important]installed[/COLOR][/COLOR] on usb.Failed to upgrade because the main partition had no more space. I moved one directory of about 100Mb to other partition, but it seemed that in the main partition didn't appear those 100Mb free. i restarted the computer expecting those 100Mb free. And kernel panic.

[ 0.789567] Kernel panic - not syncing: VFS: Unable to mount root fs on unknow-block(8,1)
[ 0.789646] Pid: 1, comm: swapper Not tainted 2.6.35-22-generic #33-Ubuntu
[ 0.789716] [<c05c6468>] ? printk+0x2d/0x35

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Fedora Installation :: FC13 - Kernel Panic - Not Syncing VFS Unable To Mount Root Fs On Unknown Block?

Oct 14, 2010

I am running FC13 on a fairly old PC (PIII 500MHz, 384MB RAM, 10GB SCSI disk). It works fine using kernel 2.6.33.5-112.fc13.i686.PAE. After a series of recent updates the system now also has a new kernel 2.6.34.7-56.fc13.i686.PAE.

/boot/conf/grub.conf contains:
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
code....

When I try and boot to the newer kernel I get an error like:

Kernel panic - not syncing VFS Unable to mount root fs on unknown block(0,0)

I read on the forum about a similar problem where the fix was to insert the line

initrd /initramfs-2.6.34.7-56.fc13.i686.PAE.img

but this file doesn't exist and so the boot then hangs with no messages, so I took this line out again. Here is contents of /boot:

$ ls -l
total 21148
-rw-r--r--. 1 root root 111391 May 27 04:06 config-2.6.33.5-112.fc13.i686.PAE
-rw-r--r--. 1 root root 112291 Sep 15 04:32 config-2.6.34.7-56.fc13.i686.PAE
drwxr-xr-x. 3 root root 1024 Jan 23 2010 efi
code....

As you may deduce from the above I haven't used the system much so the auto-update hasn't run for several months.

Any help on running / installing the newer kernel appreciated. Note that I am trying to install a wireless LAN card and am following instructions here: url

I got as far as

cd /lib/modules/`uname -r`
ls -l

which gave:

[root@localhost 2.6.33.5-112.fc13.i686.PAE]# ls -l
total 3300
lrwxrwxrwx. 1 root root 51 Jun 3 00:52 build -> ../../../usr/src/kernels/2.6.33.5-112.fc13.i686.PAE
drwxr-xr-x. 2 root root 4096 May 27 04:08 extra
drwxr-xr-x. 11 root root 4096 Jun 3 00:52 kernel
code.....

so I have the src files for the newer kernel not the one I am running. I thought it best to stop and think (and ask for help!) rather than break a working machine (but with no wireless LAN!)

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Fedora Installation :: 12 And Nvidia GeForce 5950 - Kernel Panic - Not Syncing: VFS: Unable To Mount Root Fs On Unknown-block(0,0)

Dec 5, 2009

I have a Compaq Presario 8000 with an Nvidia Geforce FX 5950 Ultra on which a year ago I upgraded from Fedora 6 to Fedora 9, and this broke the Nvidia driver, since Fedora 9 was shipped with an X server incompatible with Nvidia. I went back to the 2d driver to get X working, and it sat that way for the past year. But recently I wanted to do some 3D work and decided to install Fedora 12, which hopefully has an X server that works with Nvidia.

I decided to do a cold install, re-partitioning my 80G hard drive at the same time. I backed up my data, ran the install CDs with no errors, and booted the system, with an immediate kernel panic: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

Doing a Google search, I found over 8,000 hits for that message combined with the keyword Fedora. Several of the hits were on Bugzilla: [URL] I then booted the install disk, chose rescue mode and did - chroot /mnt/sysimage

[Code]....

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Ubuntu :: Kernel Panic - Not Syncing VFS - Unable To Mount Root FS

Jul 26, 2010

I've just started using Linux Ubuntu. I had a frightening error message, I don't know why. But after browsing some replies to something similar on this site, I simply opened a previous session and found that all worked fine and I hadn't even lost any of my downloads and adaptations. ś Yes I've still got my third level key and everything.

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Ubuntu :: Kernel Panic - Not Syncing VFS: Unable To Mount Root Fs On Unknown Block (8,1)

Feb 2, 2010

I'm using Ubuntu 9.10 through Windows 7 and got this message today...

kernel panic- not syncing VFS: unable to mount root fs on unknown block (8,1)

Is there a way to fix this? (and I'm going to need really simple instructions here)

Also I tried to uninstall ubuntu in windows 7 and then reinstall but it will not let me. it says that an error has occurred: The system cannot find the file specified stdout=

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Ubuntu :: Kernel Panic - Not Syncing - VFS - Unable To Mount Root As Fs On Unknown-block - 8,1

Feb 6, 2010

I was updating my Ubuntu 9.10 Karmic Koala when i decided that i should reboot my computer. All the downloads were done. When i rebooted it booted in normally but when it got into the kernel loading part, Linux-Bzimage and initrd loaded fine, But then Kernel Panic - not syncing : VFS: Unable to mount root as fs on unknown-block (8,1) came up. This is a wubi install also, and i have never had any troubles before.

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Ubuntu :: Kernel Panic - Not Syncing - VFS - Unable To Mount Root Fs On Unknown-block - 8,2

Mar 27, 2010

So, we had a power cut, and when I turned it back on, I got:

Quote:

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,2)

Hence, the computer won't boot.

Ubuntu is installed within windows.

I had so much data on there, How to without a re-install?

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Ubuntu :: Kernel Panic - Not Syncing: VFS: Unable To Mount Root Fs On Unknown-block

May 19, 2010

[ 0.719079] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

I was installing updates on my Ubuntu 9.10 and one of them was the upgrade to the new 10.04 LTS. So I said, okay, great! Installed the updates, upgraded my Ubuntu (even though it informed me that some packages had errors). I restarted my PC and then I get this error. I don't know what happened, but that's the error I get when I turn my PC on. Nothing else happened.

PC Specs Compaq, 32-bit processor, 2GB ram, ATI Xpress 200 graphics, Realtek soundcard. PS/2 keyboard, USB mouse. SyncMaster 920Nx flat-panel monitor.

What I did to try to fix this, regardless of it not worked:I tried resetting the BIOS. Didn't do anything. I still get the error.Tried running from CD. It didn't detect the CD or anything, I guess, because I still get the error and it didn't let me run the CD.

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Ubuntu :: Kernel Panic Not Syncing VFS Unable To Mount Root Fs On Unknown Block

Dec 8, 2010

I screwed up trying to install a new kernel Now, when I try to boot up, it says: kernel panic not syncing VFS unable to mount root fs on unknown block My system:

-encrypted LVM with encrypted home
-10.04 ubuntu system

What's the easiest/fastest way recover the documents on my encrypted home folder? I have the home folder encryption passphrase. I just want to recover and backup those documents, even if after that I have to reinstall the whole system. I have a live CD and also another 10.04 system on a second computer. I've managed to mount the hard drive in this second system and see everything on it, except the contents of the user home folder (Private). Everything I see on the internet is about encrypted home, but not top of a LVM encrypted.

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Ubuntu :: Kernel Panic - Not Syncing: VFS: Unable To Mount Root Fs On Unknown-block (0,0)?

Apr 20, 2011

I am currently running the latest version of Ubuntu (10.10 I believe) and recently installed a new, vanilla 2.6.37.1 kernel on my machine. Then, all I did was run update-grub (I'm not sure if this is correct as I am new to GRUB2 :/), rebooted and tried to boot into the new kernel, but I got the above error on boot. Does anyone know why this is happening?

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Fedora :: Kernel Panic - Not Syncing: VFS Unable To Mount Root Fs On Unknown-block (0,0)

Jul 23, 2010

I just installed the DVD iso of Fedora 13...and did a "sudo yum update" after the installation got finished. After 3 hours of waiting, I restarted. I was greeted by Fedora with a kernel panic, right after it boots up.

Here's the message:

Code:

Kernel Panic - not syncing: VFS unable to mount root fs on unknown-block (0,0)

EDIT: Here's the content of grub.conf

Code:

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that

[code]....

What is peculiar on this grub.conf, is that the 2.6.33.6-147 boot conf is missing an initrd line...I looked in the /boot directory...and I found out that the initramfs file that matches the 2.6.33.3-147 kernel is also missing (i.e initramfs-2.6.33.3-147.fc13.i686.PAE.img).

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Fedora :: Kernel Panic - Not Syncing - VFS - Unable To Mount Root Fs On Unknown-block - 0,0

May 10, 2011

My Fedora 14 box is no longer starting. I am getting a message at startup - "Kernel panic - not syncing:

VFS: Unable to mount root fs on unknown-block(0,0)".

Unfortunately, I don't know what I did before I got the message. I mean, I have made various installations, including some kernel drivers (such as a wifi card and a sound card). Also I did need to update the kernel-devel package as a requirement for some install or other. I know that is not very helpful, but let's get to the important bit...

What does the message "Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)" mean? What has broken?

And how does on recover from it? I have been reading around, and of course I am able to boot the machine from a live CD, but I am not sure what I should do with grub.conf, what I should rebuild, how to do it and so on.

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Red Hat / Fedora :: Raid1 Kernel Panic - Not Syncing - VFS Unable To Mount Root Fs On Unknown

Dec 13, 2010

I have trawled through an extensive number of post on quite a few forums without even a step forward with this.

I have a fedora 13_x64 system with software raid1 for /boot and / (md0 and md1 respectively), swap is not raided.

I was doing an yum update through the software updater in gnome and the system froze.

I had to press reset to get any response from the machine.

Since then I have been getting the kernel panic above just after grub starts fedora.

I tried the previous kernel from the previous update and it has the same error.

At the worst I am prepared to load OS again but there is still some info and configs that I would like to access from the raid partitions before I go ahead.

Is there any way to access these partitions through a live CD or rescue environment?

Is there a method to bring this install back to life? or am I looking at a reinstall?

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Ubuntu :: Won't Boot - Kernel Panic - Not Syncing: VFS: Unable To Mount Root Fs On Unknown-block (0,0)

Jan 12, 2010

I have an ongoing issue that I've not been able to troubleshoot. Upon bootup I get the following text and error, and it stops. ACPI: Aborted because bad gzip magic numbers MP-BIOS bug: 8254 timer not connected to IO-APIC Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block (0,0)

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Ubuntu Installation :: Get The Error "kernel Panic - Not Syncing: VFS: Unable To Mount Root Fs On Unknown Block"?

Oct 30, 2010

I have upgraded from 10.4 to 10.10, and when I restart I get the error "kernel panic - not syncing: VFS: unable to mount root fs on unknown block".I've done some googling and found this is a pretty common problem, but no existing solutions have worked for me.Right now I am using the 10.4 live CD.

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Fedora :: Raid1 Kernel Panic - Not Syncing - VFS Unable To Mount Root Fs On Unknown-block - 0,0

Dec 13, 2010

I have trawled through an extensive number of post on quite a few forums without even a step forward with this.

I have a fedora 13_x64 system with software raid1 for /boot and / (md0 and md1 respectively) , swap is not raided.

I was doing an yum update through the software updater in gnome and the system froze.

I had to press reset to get any response from the machine.

Since then I have been getting the kernel panic above just after grub starts fedora.

I tried the previous kernel from the previous update and it has the same error.

At the worst I am prepared to load OS again but there is still some info and configs that I would like to access from the raid partitions before I go ahead. Is there any way to access these partitions through a live CD or rescue environment?

Is there a method to bring this install back to life? or am I looking at a reinstall?

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Fedora :: FC12 - Kernel Panic - Not Syncing: Vfs - Unable To Mount Root Fs On Unknown Block - 0,0

Feb 1, 2010

I just installed a fresh copy of Fedora Core 12 on a system. I have a 1 GB swap partition, a 20 GB root partition and a 50 GB /video partition (for a mythtv system I am building).

Installation went fine, but upon the initial boot, I get:

Kernel panic - not syncing: vfs: unable to mount root fs on unknown block (0,0)

I can boot off the FC12 cd and go to the rescue option and get to a shell, but not sure where to go from

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General :: Kernel Panic - Error: Not Syncing: VFS: Unable To Mount Root Fs On Unknown - Block (8,1)

Feb 10, 2010

i am just learning about computers and know nothing at all except how to turn it on. i just booted up linux and recieved message: [0800654] Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown - block (8,1)

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Slackware :: Kernel Panic Not Syncing: VFS: Unable To Mount Root Fs On Unknown- Block(8,4) While Booting

Jun 5, 2010

im a rookie at configuring linux and i have problem booting slackware 13.1 just installed. i get a message similar to this Kernel panic - not syncing: VFS: Unable to mount root fs on unknown- block(8,4) i got this one from another user who has a similar problem, they say i should fix lilo.conf and it actually was pointing to a wrong partition so i fixed it. i also fixed /etc/fstab to make it point to the right partition /dev/sda3. but after fixing the files, it still wants to load something in /dev/sda4, i dont know why so what should i do next, please explain with commands and not just words. edit this is my lilo.conf

# LILO configuration file
# generated by 'liloconfig'
#
# Start LILO global section
# Append any additional kernel parameters:
append=" vt.default_utf8=0"
boot = /dev/sda3
[Code]...

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Ubuntu Installation :: Boot - Error "Kernel Panic - Not Syncing:VFS:Unable To Mount Root Fs On Unknown-block(0,0)"

Oct 12, 2010

I started installing the beta of Maverick a few days ago, but the update server was running inordinately slow, so I canceled it. Several times, I have attempted to continue the installation, but I've been unable to reach the server. Shortly after this happened, I could no longer boot normally--I get the error:

Code: Kernel Panic - not syncing:VFS:Unable to mount root fs on unknown-block(0,0) Choosing the previous kernel fixes the problem.

So, I obviously want to upgrade to the release version now. When I open the update manager, I get asked if I want to do a partial upgrade to complete the install. I'm a bit leery of doing this since I only have one previous kernel to go back to (my list got really long and I have another operating system entry underneath, so I set my automagic boot manager to only keep two), and if I can no longer boot after the upgrade, I'll have to use Windows until it gets fixed... So, should I finish the upgrade, try to troubleshoot the error, or do something else to jump right to the latest release, after being partway through the upgrade?

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Debian :: 506-amd64 DVD Installation - Error "kernel Panic -not Syncing:VFS: Unable To Mount Root Fs On Unknown Block(253, 52)"

Oct 4, 2010

I am trying to install debian on my windows PC but am receiving some errors with it. I have downloaded "debian-506-amd64-DVD-1.iso" from debian website and am seeing that the md5 sum is correct. I am getting following error when I choose Graphical Install or install.

[ 1.480788] crc error
[ 1.569788] kernel panic -not syncing:VFS: Unable to mount root fs on unknown block(253, 52)

Description of my PC: I have 2 hard disks

1. IDE hard disk (80 GB) -> windows is on this drive
2. SATA hard disk(250GB) -> I intend to install debian on this drive.
3. MSI motherboard & AMD 64 processor with 1 GB RAM.
4. NVidia external graphics card based on AGP slot(256 MB)

EDIT:: This time I got one more error message prior to the 2 shown above [some number] PCI:Cannot allocate resource region 0 of device 0000:00:00.0

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OpenSUSE Install :: 1.100039 - Kernel Panic - Not Syncing :VFS: Unable To Mount Root Fs On Unknown-block - 0,0

Mar 9, 2010

My computer
AMD phemom II 955 X4 Black Edition 3,2 Ghz
Asus M4A785TD-M EVO micro atx
Kingston 4Gb Ram DDR3 1333 mhz (KVR1333D3N9K2/4G)
Disco Duro Western Digital 1 terabyte
LG GH24 Super Multi DvD rewriter

menu.lst

fstab

fdisk /dev/sda

Orden (m para obtener ayuda):

Bios

I have Sata=AHCI

Sometimes it starts and sometimes not. the RAM is memtest OK. The test detects a firmware in the micro hole 15 to 16 mb of memory. The rest is OK.

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General :: Debian Lenny 2.6.34 Kernel Panic - Not Syncing VFS - Unable To Mount Root Fs On Unknown-block(0,0)

May 17, 2010

I have attempted to install kernel 2.6.34 and 2.6.33 kernels with this Debian howto [url] Everything worked without any errors until I went to boot into the new kernel. When I receive this kernel panic output Kernel panic - not syncing VFS: unable to mount root fs on unknown-block(0,0)

It also spits out something about being unable to access ext2 FS. I googled this symptom and have seen that it is fairly common, but everyone's error seems somewhat unrelated. I used the same kernel configuration as the one that is currently working, to keep things simple.

And here is what my menu.list looks like:

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Ubuntu Installation :: Kernal Panic - Not Syncing: VFS: Unable To Mount Root Fs On Unknown-block(0,0)

May 16, 2010

System:

Ubuntu 10.04 Lucid; clean install; 32bit

When booting, I can choose 2 from 2 options (ignoring recovery mode):

- Ubuntu, with Linux 2.6.32-22-generic
- Ubuntu, with Linux 2.6.32-21-generic

(and then Windows Vista and Ubuntu 9.10 a couple of times) The newer version appeared with an update from Ubuntu a couple of days after installation. When booting from the first I get the following message:

Code:

Kernal panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) When booting from the second, Ubuntu loads without a problem.

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Ubuntu :: "[6.063214] Kernel Panic - Not Syncing: VFS: Unable To Mount Root Fs On Unknown Block(8,3)"

Mar 26, 2010

I'm using Xubuntu and this is the swecond time this has happened the fist time was on the same computer but with ubuntu installed i had to reinstall it. The error message is "[6.063214] Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown block(8,3)" Both times it has happened after i went onto my windows vista partition.

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OpenSUSE Install :: "kernel Panic Not Syncing VFS: Unable To Mount Root Fs On Unknown Block(3,1)"

Sep 2, 2010

I recently decided to try out OpenSuSE after a few years of using kubuntu. However, upon lanuching the install disk I get the following kernel panic: "kernel panic-not syncing VFS:unable to mount root fs on unknown-block(3,1)". I am using the 64-bit DVD install and I have verified the md5 of both the download and the disk itself. The specs for my computer are:

Core 2 Q6600
4gb ddr2 RAM
MSI P6N-SLI motherboard
Nvidia GTX 480

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Ubuntu Installation :: Upgrade 9.10 To 10.4 - Kernel Panic - Unable To Mount Root

May 13, 2010

I had 9.10 installed on my IBM Lenovo Thinkpad, x301. I was performing updates as normal, and chose the Upgrade button to upgrade me to 10.04. Everything started fine, but upon reboot, no bueno, Kernel Panic!

The exact message was "Kernel Panic ubuntu - not synching VFS Unable to mount root fs".

I thought this was a grub issue. Since grub2 now is installed... But it was not. I think it ended up being a problem with some of my configuration files.

I have three kernels I tried:
1. 2.6.32-22
2. 2.6.31-21
3. 2.6.31-20

The first threw me into the kernel panic.
The second would hang on "init crypto disks"
The third would hang on "checking battery state"

I noticed (from reading another thread) that while these are loading up that you can click on alt-ctl-F1 thru F6 and get prompt. (I also had my home directory encrypted, thought that was part of the problem, but it wasnt).

Once I get passed the loging, I am able to poke around. I tried manually start Gnome via "sudo service gdm start", but it failed. Said it was missing a configuration file. Then I tried on "sudo dpkg-reconfigure gdm" and it would not work. Saying some configuration files are missing or broken. It also said something about dpkg --configure -a, I am assuming this configures everything...

So I tried "sudo dpkg --configure -a" And selected 'y' to every option. Which basically installs the package creators default settings, and viola! Works.

Just wanted to share that knowledge for the other stuck in the upgrade hell.

Normally I would just copy my files off and reinstall, but it was encrypted... Another headache. I guess good in case someone stole my laptop.

Remember try to "sudo dpkg --config -a"

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Ubuntu :: Screen Reads 1.414518 Kernal Panic-not Syncing: Vfs: Unable To Mount Root Fs On Unknown - Block (8,2)

Mar 23, 2010

I've been using Ubuntu now for 4 years and apart from getting the wireless card working on this laptop it has worked perfectly until now. I just loaded the updates and now problems, after switching on and selecting Ubuntu the next screen gives options

2.6.31-20 generic
2.6.31-20 recovery mode
down to
2.6.31-16 generic

if I hit return or let 20 load the next screen reads 1.414518 Kernal panic-not syncing :vfs : unable to mount root fs on unknown - block (8,2) Caps light starts flashing and only way out is to power down. If I select 20 recovery I get a screen full of info and then caps light flashing and only way out is the power button, if I select 19 it loads and works as normal. Is there a simple way to get it auto loading again as the rest of the family use this and are now Ubuntu converts and will not realise whats going on and will reluctantly load up windows.......

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