After seeing a post of other forum member about switching between different modes i decided to post about the registry changes which allow you to switch between Ide, Ahci and non-member raid modes in windows 7 using a single disk without re-installing and showing the performance differences.
It should also work in vista, i dont know if it works in xp but someone could test it out.
First backup/image all your information incase anything goes wrong but it is just a matter of 3/4 registry changes which are easily reversable.
Go into the registry using regedit and change each of the “start” values in the registry keys below from 3 to 0 and this will allow you to change between the different modes by just changing the option in your bios each time you reboot.
You might not have the last registry key (iastor) as this is installed in the registry with the intel raid drivers, the default windows 7 raid driver uses the iastorV key.
These are some pics of the performance differences for me, the first pic is running in Ide, second is Ahci, third non-member raid.
For me non-member raid is the best performer but the wiper is too slow in this mode. By easily changing modes in the bios any time i want to run the wiper i can switch to ide/Ahci mode run it and reboot switching back to non-member raid. 🙂