I could not isntall GRUB to the boot partition on my second drive /dev/sdb2. The only way was to install to MBR on /dev/sda. This was kinda a bummer since it wiped out my TereabyteUnilimted Boot Manager making Windows, openSUSE and Ubuntu unbootable. Will try to either install GRUB on /dev/sdb2 or at least have the GRUB boot menu allow me to boot other OS (like chainloader +1 for Windows for example). From the FedorafForums the developer for Fedora GRUB posted in response to me that instead of "update-grub" you can use the command "grub2-mkconfig -o /boot/grub/grub.cfg" to create grub.cfg which I believe GRUB reads but probably you have to hand edit to grub.cfg to make the other entries. He provide a FAQ he's has been writing. http://home.roadrunner.com/~computertaijutsu/grub2.html
Marty
PS Has anybody gotten the the netisntall or DVD ISO to boot? They just froze on me. The only way I could install was bly using the Live ISO.