6 Replies Latest reply on Dec 22, 2009 9:32 PM by dbm

    HELP - Enabling AHCI in Windows 7 on Macbook Pro

    mecoolai

      I've been reading around but haven't figured out a way to enable AHCI in Windows 7 for a Macbook Pro. I do not believe doing that registry hack does anything for me (here is the hack i'm talking about). It seems you have to run some type of script to get it to work, looks complicated!

       

      Vista 32/64 Windows 7 32/64
      - Run Regedit
      - Navigate to "HKLM\System\CurrentControlSet\Services\msahci "
      - edit the "Start" key and change the value from what it is to "0"
      - this will tell Vista to check for AHCI on next boot and install the AHCI driver if it is in AHCI mode
      - this installs the generic AHCI Microsoft driver and it is really a poor driver for your hardware and you will need the Intel ones to get full performance.

       

      The only sites I've seen that looks remotely close to enabling it is..

      http://www.infinitemac.com/f74/how-to-boot-mac-pro-in-ahci-mode-t3159/

      http://forums.macrumors.com/showthread.php?t=760482

       

      Has anyone actually enabled it on a mac laptop or desktop? How do I know if AHCI is enabled or not or actually working? Do I have to run the script every time I use Windows 7?

       

      Setup on Intel X25-M 160gb G2:

      Windows 7 x64 Ultimate 40gb

      Mac Snow Leopard 120gb