You don't. You would update the drivers for your drive controller. Look under disk controllers in hardware manager and post yours. Most are bundled with the chipset drivers for the motherboard.
Is it a SATA disk? What kind? Have you checked to make sure that it doesn't have the 1.5Gbps jumper set on a SATA 2.0 capable controller?
Is it a SATA disk? What kind? Have you checked to make sure that it doesn't have the 1.5Gbps jumper set on a SATA 2.0 capable controller?
