FC3 won't boot on Gigabyte K8NS-Ultra-939

[Doug Stewart]

Howdy all,
I'm hoping you could point me in the right direction on this one.

I've recently acquired a spankin' new machine based on the K8NS-Ultra. 
I've got a single SATA drive attached to the Sil controller (I know, I 
know, the nForce SATA controller supposedly IS a Sil one; I'm talking 
about the separate one).

've installed FC3 (x86-64 edition) twice on it.  The install goes 
flawlessly, but when I reboot, I never even get to the grub screen - the 
bios just complains "No operating systems found".  FC seems to think I'm 
installing on /dev/sda, so on a hunch, I tried booting off a rescue disk 
and running `grub-install /dev/sda`.   This took far longer than I have 
ever encountered on a non-AMD64 system, but eventually came back and 
reported no errors.

Upon reboot, I still received "No operating systems found".  Help!

-- 
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Doug Stewart
Systems Administrator/Web Applications Developer
Lockheed Martin Advanced Technology Labs
dstewart at atl.lmco.com