ASRock P67 Pro - Manual (Page 245)

Installing OS on a HDD Larger Than 2TB
This motherboard is adopting UEFI BIOS that allows Windows ® OS to be
installed on a large size HDD (>2TB). Please follow below procedure to
install the operating system.
1. Please make sure to use Windows ® Vista TM 64-bit (with SP1 or
above) or Windows ® 7 64-bit.
2. Set AHCI Mode in UEFI Setup Utility > Advanced > Storage
Confi guration > SATA Mode.
3. Press F11 to launch boot menu at system POST.
4. Choose the item “UEFI:xxx“ to boot. (“xxx” is the device which contains
your Windows ® installation fi les. Normally it is an optical drive.)
5. Start Windows ® installation.