Are you a dual-booter running a Linux-Windows or even a Linux-Linux dual-boot system? Have you ever lost booting access to one of your OSes or want to be prepared for if and when that happens? If yes, ...
I'm dual booting Debian Sarge and XP right now, with all NTFS disks excepting hdc1,hdc2 and possibly 3 (I don't remember if I set up a /boot partition or not). I was playing Warcraft 3 in Windows when ...
Do the same thing for your other drive, which will be either hdb or hdc depending on how you have things hooked up. Also useful is a 'ls -lR' listing of /boot and the contents of /boot/grub/menu.lst.