Enable AHCI on a ASUS P5 EPU/SE motherboard

Modified BIOS ROM: http://www.bios-mods.com/forum/Thread-AHCI-enable-on-ASUS-P5K-SE-EPU-and-option-ROM-update

(or crossflash newer P5K ROM instead)

Windows XP: http://forums.pcper.com/showthread.php?t=444831

Windows 7: http://www.windows7news.com/2010/05/25/how-to-enable-ahci-in-windows-7/