Grub Install

A short tutorial on GRUB reinstallation.

This method is recomended when the MBR was overwritten and you don't have access to the Linux partition.

1. boot with a LIVE CD, login to a terminal as user root.
2. find out which partition holds the Linux installation:

   fdisk -l /dev/hda

3. mount the partition that holds the Linux installation:

   mount /dev/hda5 /mnt/hda5

4. change the root for the current process to match the partition name:

   chroot /mnt/hda5

5. put GRUB into the MBR

   /sbin/grub-install /dev/hda

   This command will overwrite the Master Boot sector so if you had a boot loader previously this will no longer start.

If you have access to the grub console and somehow you changed the Linux install partition:

grub> root (hd0,4)
grub> setup (hd0)
grub> quit