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Thread: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown - block

  1. #31
    Join Date
    Dec 2005
    Beans
    8

    Re: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown - block

    Quote Originally Posted by obroyz View Post
    Hi everyone,

    I'm absolutely new to Linux, leave aside Ubuntu. Having installed Ubuntu Karmic Koala just a few days ago, using Wubi, I have been extremely impressed with this O/S.

    Getting to the point, I ran into this problem yesterday and I really couldn't understand a word everyone was saying about fixing this issue. My kernel had been updated to 2.6.31-15 and last morning, my machine wouldn't boot.

    I noticed that I was able to boot into 2.6.31-14, so I worked on it for a while, trying to find a 'simple' solution before I went on learning all the technical stuff.

    Anyhow, the fix:

    1) Go to System > Administration > Synaptic Package Manager
    2) Put in a search for linux-image
    3) Locate the package "linux-image-2.6.31-15-generic"
    4) Select the check-box next to this package and choose "Mark for Reinstallation"
    5) Apply this changes
    6) Reboot your machine

    (For me) problem solved.

    I hope it works for all of you as well.

    Thanks,

    J.
    This did it for me as well, thanks a lot. I got the kernel panic message when booting into 2.6.31-20-generic, but was able to boot with 2.6.31-14-generic. From there, I could reinstall the linux-image for 2.6.31-20-generic and that solved the problem.

  2. #32
    Join Date
    Feb 2010
    Beans
    1

    Re: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown - block

    I felt disappointed at the support and i got for the ubuntu . I updated my system last night and in the morning when i restarted my comp it showed kernel panic error. This is not the first time its happening to me. Last time when i upgraded it stuck at the (grub) prompt at start up. I tried to mount kernel manully but all was in vain. If the kernel updates are not stable y the hell they r provided in the list. All are not advance user that they can work around the problem easily. I lost my 3 months project bcoz of ubuntu and lack of support . Thank You team ubuntu ... for your horrible problem solving blog..

  3. #33
    Join Date
    Mar 2010
    Beans
    3

    Angry Re: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown - block

    well i'm quiet frustrated too as i have had the same problem twice in two days..first time i just reinstalled ubuntu...but i also have to install like a million packages on karmic before i can do my work with a fresh installation..just came across this thread..havnt tried any of the solution but if any of this doesn't work i'm dead..the project's due very soon

  4. #34
    Join Date
    Sep 2008
    Location
    Gainesville, FL
    Beans
    32
    Distro
    Ubuntu 10.04 Lucid Lynx

    Arrow Re: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown - block

    Your kernel does not support the RAID configuration, or have the driver for it in-built. Until the latest Ubuntu kernel comes with support for your config, you will need to get the drivers (from the manufacturer's website) and install it as a loadable kernel module (insmod). Then alone the kernel will "see" the drive.

    I remember doing this because "2.6.35-22-server" did not have support for 3ware 9750 RAID controller in my machine. The only disadvantage is that you have to be careful not to do a direct kernel upgrade through aptitude.

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