Have you looked under "Drives" yet?
And have you looked into the manual of your motherboard?
And have you asked this question at a PC orientated forum, as Macs don't have a BIOS?
Maybe you could also ask at the forums I linked to in your other thread, as you want to create a Hackintosh, and though they are not forbidden here, there are not that many threads about Hackintoshs here.