I'm trying to reinstall grub (something's wrong with my hd and I had to do fsck to fix it, but still I have no grub at bootup so I am on livecd) by following remmelt's instruction on http://ubuntuforums.org/showthread.php?t=24113&highlight=grub+restore .. however, I can't figure out what to type for step 4 after "root (hd" ... can someone help?