Switching from Single SSD drive using a RAID controller to AHCI

I have a computer that was using RAID 1 with 2 HDD. I first removed one of the drives and attached my new SSD. Rebooted and let the RAID rebuild. Next I shut down and entered the RAID setup CTRL + I and removed the SSD drive from the RAID set by selecting (Non-RAID) in the controller. I then disconnected all my drives except for the SSD and rebooted. This all went fine and the system booted just fine. I now want to switch from the RAID controller to the AHCI controller. I found a registry hack online to change the IastorV > Start value to 0 but mine was already set to 0. Also I was to change the MSAHCI > start value also to 0. This was set to 3 and I changed it to 0. Following the instructions I rebooted and entered the BIOS and change the SATA controller from RAID to AHCI. My system won't boot. If I set it back to RAID it boots again. I want the added advantage of AHCI without having to reinstall everything. Can someone help.

Wecome to the Forum.

Did you try to boot with only the SSD attached?
Did you try to boot on safe mode?
Did you try boot repair (from win 7 installation disk)?

I have a 128G SSD for Windows and Lubuntu and 2 500G HDD's on a RAID 0 array.
As I know, RAID uses the chipset controller RAID function that has all AHCI functions.

So why don't you use the SSD for Windows and programs and the 2 HDD's on a RAID 1 array for data?

Thanks for your reply,

Yes, I currently only have one drive connected which is the SSD except for my DVD drive
Yes, I did try safe mode
Yes, I did try the repair from the repair disc and the recovery partition.

More research showed that Intel RAID 11.1 supports TRIM and The intel SSD toolbox showed TRIM is set to 0. I had to look this up but 0 is enabled. Samsung Magician software also reports TRIM is enabled. So unless I get additional support or idea's on how to switch to AHCI I'm going to leave the controller set to RAID. It is odd that the IaStorV start setting is set to zero (0) and yet this appears to be the driver that is being used. Device manager even reports that I'm using Intel Express Chipset SATA RAID Controller. I did see a MSiSCSI registry key with the start data set to 3.

I welcome any other suggestions or thoughts if anyone has any idea's.

Thanks everyone.

- TRIM
Type this cmd
fsutil behavior query DisableDeleteNotify

It will give you one of two results, either a 0 or a 1. A zero indicates that TRIM is enabled correctly, a one means that it is not. If you have a TRIM-compatible SSD, but find that Windows 7 hasn't enabled the command, you can easily do so by running this command:

fsutil behavior set DisableDeleteNotify 0

Is your BIOS up to date?

Thank you. it returned a "0" so I'm good to go. I'm marking this as solved however it's not really solved but I did accomplish my main goal and that was to make sure my new SSD was able to use the TRIM feature.