Use RIP CD to fix the grub issue after RHEL 5 hard power shutdown

Jephe Wu -  http://linuxtechres.blogspot.com

Scenario: HP Proliant DL360G5 server running RHEL 5 and 32bit Oracle 11g database (11.1), after yum update and some Oracle impdp/expdp operations, the server hangs, we have to press power button to shut it down, after power it on again, the GRUB stops at 'loading grub stage 2'.

Steps:

1. use RIP(Rescue Is Possible - http://www.tux.org/pub/people/kent-robotti/looplinux/rip/) to reboot server.
2. re-generate grub
# vgdisplay -v
# lvdisplay -v (find out the root LVM partition name)
# vgchange -a y
# mount /dev/VolGroup00/LogVol00 /mnt/hd
# cd /mnt/hd; chroot .
# mount /dev/cciss/c0d0p0 boot
# cd /dev
# MAKEDEV cciss
# grub-install hd0

3. finishing job
# cd /mnt/hd
# umount boot
# exit
# umount /mnt/hd
# reboot