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I need to get my Grub loader back

By chadro
Feb 24, 2004
  1. I just reformatted the XP partition and lost the Linux Red Hat 9 Grub boot loader. Any easy way i can get it back??? I cant boot into Linux no more :(. Reply to me as i am a noob at Linux. Thank you
     
  2. Nodsu

    Nodsu TS Rookie Posts: 5,837   +6

    How did you install Grub in the first place?
     
  3. MattG

    MattG TS Rookie Posts: 140

    Grub installs on some flavors during install...assuming its either on the super Block or the MBR?

    more info is needed.
     
  4. chadro

    chadro TS Rookie Topic Starter Posts: 38

    uh....ok??? but anyway......there was no /boot partition installed so i assume the loader was in the MBR. I heard there was a way to recover the loader using the boot disk i made. Do you know the commands?
     
  5. Nodsu

    Nodsu TS Rookie Posts: 5,837   +6

    You put the floppy in and boot into linux. It should boot nicely into the graphic environment.

    Look in /boot/grub/menu.lst file. If you see an entry for your Windows there then Grub was in the MBR or even if it wasn't, you will still be able to get into Windows after you install Grub. Use the grub-install command to put Grub back. It should be sth like "grub-install /dev/hda".
     
  6. chadro

    chadro TS Rookie Topic Starter Posts: 38

    DO i enter the grun-install/dev/hda commands at the Terminal Prompt (bash) or do i do them after the boot disk is loaded?
     
  7. Phantasm66

    Phantasm66 TS Rookie Posts: 5,734   +7

    1>Method One - Boot from Installation CD

    boot from the linux CD.

    type this at the boot prompt:

    linux rescue

    use the ensuing rescue procedure to get to a command line, with your / mounted, say as /mnt/rescue

    then say this:

    chroot /mnt/rescue

    now your / on your HDD is mounted as / and not /mnt/rescue (formerly, / was the root of the RAM drive your CD boot sets up.)

    Now, type this:

    /sbin/grub-install /dev/hda

    now this

    exit

    exit

    and reboot.


    2> Method 2 - Boot from rescue floppy

    once the floppy is booted, and you have logged in:

    /sbin/grub-install /dev/hda

    now reboot.
     
  8. MattG

    MattG TS Rookie Posts: 140

    Phantasm to the resuce :)

    That should work. Let us know if it does not.
     
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