I tried: grub-install /dev/hda4, with rescue mode on FC2 CD1, and also FC2 rescue CD, nothing. It doesn´t appear to be on the CDs!
The only grub-install I can find is on my hda4 partition in /mnt/fc2/sbin/, the problem is grub-install keeps trying to find itself in /sbin. I tried to re-do the PATH statement and still nothing.
You could do "chroot /mnt/fc2" to get around that.
You still didn't say how you made the copy.
P.S. Please don't top-post on this mailing list.
Paul.