The BIOS MUST recognize it. It doesn't matter what Windows thinks. If the BIOS does not detect it, you have some re-arranging to do... jumpers, setup, etc. If you are trying to do RAID, you need to ask yourself if you have enough manuals, RAID knowlege, and computer experience. RAID is difficult enough for experienced people. You might consider easing into it after you get the fundamentals down in your setup.