I have a WD RAPTOR 36GB and a SEAGATE BARRACUDA 7200.9. My SATA SEAGATE is connected to sata 1 port and my WD RAPTOR is connect to the sata 2 port. When this is the case, the system boots fine and everything is nice and neat. When I invert the the hard drives, there is, the seagate on sata 2 and the raptor on sata 1 it says: BOOT FAYLURE, PLEASE INSERT SYSTEM DISK. Does anyone have any ideas why this behaviour? Would it be something in the bios? Thanks.