Well install it in IDE if you plan to use IDE, install in AHCI if you are going to use AHCI. Typically if you install in IDE and boot in AHCI mode it will be very slow/act weird or just plain BSOD on bootup.
There is a way to activate AHCI mode by editing some things in the registry. To accomplish this first you should set IDE in BIOS and get into Windows. Then make the changes in the registry, reboot, and change to AHCI in BIOS. Hopefully it will make it into Windows and install/use the default Windows AHCI driver. After that you can install the AMD AHCI driver if you want.
You can try this here: http://blog.rolpdog.com/2012/03/enabling-ahciraid-on-windows-8-after.html
Been playing around with Windows 8 Consumer Preview and Windows 8 Server recently. After installing, I needed to enable RAID mode (Intel ICH9R) on one of the machines that was incorrectly configured for legacy IDE mode (why is this the default BIOS setting Dell?). In Win7, you would just ensure that the Start value for the Intel AHCI/RAID driver is set to 0 in the registry, then flip the switch in the BIOS, and all's well. Under Win8 though, you still end up with the dreaded INACCESSIBLE_BOOT_DEVICE. The answer is simple enough: turns out they've added a new registry key underneath the driver you'll need to tweak: StartOverride. I just deleted the entire key, but if you're paranoid, you can probably just set the named value 0 to "0".
So, the full process:
- Enable the driver you need before changing the RAID mode setting in the BIOS:
(for Intel stuff, the driver name is usually iaStorV or iaStorSV, others may use storahci)
-- Delete the entire StartOverride key (or tweak the value) under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\(DriverNameHere)
- Reboot to BIOS setup
- Enable AHCI or RAID mode
If you don't want to mess with any of that then the simplest route is to re-install Windows, this time in AHCI mode. You can pre-load the AMD AHCI driver during Windows install (from say a USB pen drive or CD), otherwise it will use the default Windows AHCI driver. You can still install the AMD driver later.Edited by M3TAl - 11/2/13 at 9:40pm