I am trying to switch my XP installation over from using IDE to ACHI so that I don't have to change the SATA emulation mode in the BIOS every time I want to switch OS's.
Making the registry change is easy - http://support.microsoft.com/kb/922976
The issue is those registry keys do not exist, and I cannot get the AHCI driver to install. I'm assuming that part of the installation of the AHCI driver is the creation of those keys.
My motherboard is an Asus P8Z68-V Pro. I have downloaded the SATA driver from the support page (its the Intel Storage Matrix or something along those lines) which is the thing that enables my AHCI support, yet whenever I run the installation, it fails with the error 'This computer does not meet the minimum requirements for this..' (paraphrased because I can't remember exactly and I'm not in front of my computer at the moment).
So I suppose my question at the end of the day is - How do I get this AHCI driver to install? and if/when it does, will that create the registry keys that I can then change to allow XP to boot when my SATA emulation mode is set to AHCI in the BIOS?
As a backup if i can't get this working, I'll probably try and slipstream the driver using nLite or something and installing fresh.. Would prefer to avoid that though!