I have an ASUS AV8 Deluxe mobo, with 2x SATA 10k -60gb HD's in raid 0 configuration on the two raid SATA slots on my mobo. These are controlled by a Promise Fasttrack controller, and function fine.
Recently I bought myself 1x SATA 250gb Seagate HD and hooked it up to one of two non-raid SATA...