Well, as suggested by various people, I booted the system into rescue mode using the install cd. Once booted, I chroot'ed, then ran:
grub
grub> root(hd0,0)
grub> setup(hd0)
This command did not return any errors. All output looked successful and normal from my experience on single-disk...
I have a Dell PowerEdge 2650 with on-board Adaptec Perc3Di SCSI RAID controller (mirrored 18GB drives for OS). It also has an add-in Adaptec 2810SA 8-channel SATA RAID card. After installing FC3, and installing GRUB to the MBR of the mirrored 18GB drives for OS, when I boot the system, I get...