Tips & Tricks “Resintalling grub”

I came across the following procedure for reinstalling grub and thought it would be useful to share, having it handy can save you time you get into a bind.

1. Boot the system from an installation boot medium.

2. Type linux rescue at the installation boot prompt to enter the rescue environment.

3. Type chroot /mnt/sysimage to mount the root partition.

4. Type /sbin/grub-install /dev/hda to reinstall the GRUB boot loader, where /dev/hda is the boot partition.

5. Review the /boot/grub/grub.conf file, as additional entries may be needed for GRUB to control additional operating systems.

6. Reboot the system.