No, all devices that are plugged in run in AHCI mode. From my bios it states that the bluray drive, samsung 830, and samsung HDD run in AHCI mode. When I go to device manager under IDE ATA/ATAPI controllers it reads: ATA Channel 0 ATA Channel 1 ATA Channel 3 ATA Channel 4 ATA Channel 5 Intel ® 6 Series/C200 Series Chipset Family 6 Port SATA AHCI Controller - 1C02 I'm not sure if the above has anything to do with the problem, but figured I'd list it anyway.