Let's see, if it's a BIOS related thing, I have nothing but the base settings enabled. I tried all three of the RAID modes (IDE, RAID, AHCI) and none of them allowed OSx86 to boot. I've now re-installed it on a freshly formatted partition 3 times using custom settings and choosing the SB600 kext each time, the latest time installing all the kexts for my system because I looked them up. I still get the "Still waiting for root device" and I cannot figure out why.