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Thread: gnu grub version 1.99-21ubuntu3.1 error

  1. #1
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    Sep 2012
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    Red face gnu grub version 1.99-21ubuntu3.1 error

    Hi!
    i have a problem at startup of ubuntu 12.04 64bit.
    when i start the computer it says:

    GNU GRUB VERSION 1.99-21ubuntu3.1
    Minimal BASH- like line editing supported. for the first word, TAB
    lists all possible command completions. Anywhere else TAB list possible device or file completions.

    if i press tab, it shows a list of some words that don't make sense to me.

    when i insert a liveCD there is no response. yes i have selected CD boot in bios, but it starts from hard disc anyway.


    Please help.

    J.

  2. #2
    Join Date
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    Ubuntu 12.04 Precise Pangolin

    Re: gnu grub version 1.99-21ubuntu3.1 error

    Were you deleting any partitions? Maybe you deleted the ubuntu partition by accident? Were you changing the boot order in BIOS? Maybe you have good grub2 on one disk and broken grub2 on another one, and you are simply booting from the wrong disk.

    It's not possible that it can't boot from the cd. If it can't, then either you are not doing it right, or your cd-rom is faulty, or the cd is faulty. The computer should always be able to start from cd when you tell it to, regardless what is happening with the hard disk.

    But if you want, you can try fixing this without the liveCD (although it would be much easier if you can boot the cd in live mode).

    At that grub prompt, what does it show if you execute:
    ls (small LS)
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 12.04 LTS 64bit & Windows 7 Ultimate 64bit

  3. #3
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    Re: gnu grub version 1.99-21ubuntu3.1 error

    ls:
    (hd0) (hd0,msdos5) (hd0, msdos1)

    I've instaled upgrades, have only 1 disk, couldn't delete partition, because ... well i just don't know how to do that

    i'll check cd and report.

  4. #4
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    Re: gnu grub version 1.99-21ubuntu3.1 error

    So, you have only one disk (hd0) which has two partitions, #1 and #5. I guess you have only ubuntu, not a windows dual boot.

    In that case, try these commands to boot. Execute them one by one:
    Code:
    insmod part_msdos
    insmod ext2
    set root=(hd0,msdos1)
    linux vmlinuz root=/dev/sda1
    initrd initrd.img
    boot
    See if that boots you.
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 12.04 LTS 64bit & Windows 7 Ultimate 64bit

  5. #5
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    Re: gnu grub version 1.99-21ubuntu3.1 error

    after linux vmlinuz root=/dev/sda1
    i get: invalid file name 'vmlinuz'

  6. #6
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    Re: gnu grub version 1.99-21ubuntu3.1 error

    OK. Before you start executing the commands, check the exact file names with:
    ls (hd0,msdos1)/boot

    You should see something like vmlinuz-3.2.0-xx-generic and initrd.img-3.2.0-xx-generic. Note them down.

    After that, when you know which files are there exactly, modify the last two lines before boot as:
    Code:
    linux /boot/vmlinuz-3.2.0-xx-generic root=/dev/sda1
    initrd /boot/initrd.img-3.2.0-xx-generic
    The rest of the commands are the same. In these two just use the filenames you found with the ls command.

    See how that goes.
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 12.04 LTS 64bit & Windows 7 Ultimate 64bit

  7. #7
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    Re: gnu grub version 1.99-21ubuntu3.1 error

    i get list of files, like 20 of them. they're all similar(starting with system.map/abi/config/initrd.img/vmlinuz), but have different numbers - from 20 to 31.

    if i use any of these, starting with vmlinuz i get:
    error: file not found.

  8. #8
    Join Date
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    Ubuntu 12.04 Precise Pangolin

    Re: gnu grub version 1.99-21ubuntu3.1 error

    Make sure you use the correct syntax for the filename. If it's there, it should work. Try the ones with the highest -xx- number first, if that doesn't work, the next lower, etc.

    Also, try this modification:
    Code:
    linux (hd0,msdos1)/boot/vmlinuz-3.2.0-xx-generic root=/dev/sda1
    initrd (hd0,msdos1)/boot/initrd.img-3.2.0-xx-generic
    Just make sure you use the correct filenames and it should work.
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 12.04 LTS 64bit & Windows 7 Ultimate 64bit

  9. #9
    Join Date
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    Re: gnu grub version 1.99-21ubuntu3.1 error

    I'm signing off, just to add this. If those commands managed to boot your ubuntu, open terminal and reinstall grub2 to the MBR with:
    Code:
    sudo grub-install /dev/sda
    sudo update-grub
    If you can't boot with those commands, then you might have a more serious problem, not just grub2 not booting.
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 12.04 LTS 64bit & Windows 7 Ultimate 64bit

  10. #10
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    Re: gnu grub version 1.99-21ubuntu3.1 error

    can I try one after the other, or must I type everything for each try, when i try different numbers?

    i tried with nr.31 and 1. of these two rows was ok, for second one i got:
    couldn't read file

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