Is there any article about AHCI vs SATA? I thought SATA2 support NCQ. What does AHCI offer over SATA2? My AHCI drive is not shown in "safely remove hardware" wizard. This is not the system drive. I though SATA drive is hot-removable? The motherboard does not have an option for SATA, only AHCI. If it's set as AHCI, do I need special driver (not SATA driver) to install XP? Thanks!