Issue with Grub

On my desktop I had a dual boot with crunchbang and ubuntu and I didn't pay much mind to the fact that when I installed crunchbang after ubuntu, ubuntu's grub was still installed on the disk's master boot record.  The other day I added a hard drive and decided to clean up and organize my hard drives. With this added hard drive it makes a total of 4 drives in the desktop. The other 2 are small, one has win xp and the other has fedora 10 or 11.
So I decided to reinstall crunchbang 10 alpha 2 on the old drive without ubuntu. So I installed and reboot but grub tells me something along the lines of cannot find operating system. I then tried to install crunchbang on the new drive. This time after reboot I didn't even see grub and got the message of: "unknown operating system."
I sat and thought about this for a little while and remembered that while restructuring the old hard drive the install program said it was modifying the LVM drives from the fedora hard drive. So I switch my hard drive boot priority to the fedora drive and sure enough there was crunchbang's grub install.
I just don't understand why grub didn't just stall on the MBR of the drive I installed it on.
Is there something I can do to put it on the appropriate drive so I can either get rid of or modify the use of the fedora drive.

thank you for all your help.