Typically, AHCI drivers are loaded during the initial Windows OS installation process by hitting F6 at the SCSI driver request prompt. Well, many people (like me) didn’t know anything about this, or what AHCI was for that matter, prior to buying a new motherboard and building a new computer.
In my case, the motherboard is the Asus P5Q with the Intel P45 ICH10R Chipset. Up until tonight I’d been running the SATA 3 drives as IDE Enhanced.
Well, I’ve figured out a way to get everything SATA working as AHCI for improved performance without reinstalling Windows!