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  1. #1

    Grub Not Working

    Hi. i re installed windows and now grub isnt working. i dot know how to reinstall the bootloader. i forgot to make a recovey disk. I tried starting my computer on knoppix (this is were im typing this message) but i try the grub-install command and it doesnt work it says "cannot create directory /boot/grub: read only file system". when i chroot to the partition that has redhat 9 on it and try it. i get an error message that says " /dev/hda7 does not have a corresponding BIOS drive" Help anyone??

  2. #2
    Linux Engineer
    Join Date
    Jul 2003
    Stockholm, Sweden
    you need to mount /boot before you can read it properly do that then run:


  3. #3
    Linux Engineer Nerderello's Avatar
    Join Date
    Apr 2003
    North East England
    read the tutorial section on recovering from what you have done.
    It's in the GRUB howto section that I wrote.

    have fun


    Use Suse 10.1 and occasionally play with Kubuntu
    Also have Windows 98SE and BeOS

  4. $spacer_open
  5. #4
    Linux Newbie
    Join Date
    Apr 2003
    Pontypridd, Wales
    My advice:

    boot to knoppix and create a grub floppy like so:

    Creating a GRUB boot floppy

    To create a GRUB boot floppy, you need to take the files `stage1' and `stage2' from the image directory, and write them to the first and the second block of the floppy disk, respectively.

    Caution: This procedure will destroy any data currently stored on the floppy.

    On a UNIX-like operating system, that is done with the following commands:

    # cd /usr/share/grub/i386-pc
    # dd if=stage1 of=/dev/fd0 bs=512 count=1
    1+0 records in
    1+0 records out
    # dd if=stage2 of=/dev/fd0 bs=512 seek=1
    153+1 records in
    153+1 records out
    Boot from the floppy, this will bring you to a grub command line.

    at the command line example:

    #configfile /grub/grub.conf

    Replace $BOOT PARTITION with your boot partition e.g. (hd0,3)

    This should allow you to boot into redhat.

    Once you have done this re-install grub to your mbr and all should be well.

    GRUB how to can be found at

    Good luck, and keep the grub floppy for any future problems - leaning how to manipulate the GRUB command line is a usefull skill.

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