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Thread: Boot sector error prevents Ubuntu loading

  1. #1
    Join Date
    Feb 2008
    Location
    A Sith Ifrican in London
    Beans
    280
    Distro
    Ubuntu 14.04 Trusty Tahr

    Question Boot sector error prevents Ubuntu loading

    I had this trouble once before and for the life of me, cannot remember the solution. The problem with old age is, I can remember everything 40 years ago - anyone want some help with the Commodore Pet?

    I had some malware so reloaded Ubuntu 13.04 and within a couple of seconds of turning the computer on, I get the following error message

    error: unknown filesystem.
    grub rescue>


    Alas, the only way I can get to my data is to load up the live disk, and you all know how long that takes. I am slowly dying here of caffeine poisoning during the daytime and alcohol poising during the evening.

    Any clues? I downloaded the boot repair disk, but that doesn't boot.

    Ampers.

    Ampers Taylor - ampers on Skype - Web www.ampers.uk

  2. #2
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Boot sector error prevents Ubuntu loading

    If you have liveDVD or flash working you can download Boot-Repair into the Ubuntu installer.

    Post the link to the BootInfo report that this creates. Is part of Boot-Repair:
    https://help.ubuntu.com/community/Boot-Info
    Boot Repair -Also handles LVM, GPT, separate /boot and UEFI dual boot.:
    https://help.ubuntu.com/community/Boot-Repair
    You can repair many boot issues with this or 'Create BootInfo' report (Other Options) & post the link it creates, so we can see your exact configuration and diagnose advanced problems.
    LighterWeight (Lubuntu based) Boot-RepairCD
    http://sourceforge.net/projects/boot-repair-cd/files/
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  3. #3
    Join Date
    Feb 2008
    Location
    A Sith Ifrican in London
    Beans
    280
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Boot sector error prevents Ubuntu loading

    Have tried that but get lots of error messages and just doesn't work.

    Ampers Taylor - ampers on Skype - Web www.ampers.uk

  4. #4
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Boot sector error prevents Ubuntu loading

    What errors are you getting with Boot-Repair or Ubuntu liveDVD/Flash?
    You can try booting from grub rescue manually.

    Grub Rescue Prompt Megathread - drs305
    http://ubuntuforums.org/showthread.php?t=1594052
    HOWTO: Boot & Install Ubuntu from the Grub Rescue Prompt
    http://ubuntuforums.org/showthread.php?t=1599293

    You can also try Supergrub.

    http://www.supergrubdisk.org/
    http://www.supergrubdisk.org/wiki/Main_Page
    http://www.supergrubdisk.org/wiki/AutoSuperGrubDisk
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







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