How to Change RAID mode to ACHI mode

1. Press [Win] + R or take the RUN option from the start menu.
2. Now type regedit there and press Enter Key to open up the Registry Editor Window.
3. If you receive the User Account Control dialog box, click Continue.
4. Locate and then click the following registry subkeys:
   Loaction
   

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\pciide
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\msahci
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStorV
   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\atapi
   

5. click Modify on Start value.
6. In the Value data box, type 0 [3 is default], and then click OK.
7. Close Registry Editor.
8. Restart your computer
9. Go to UEFI/BIOS and enable AHCI, Save & Reboot
10. Another restart will be required to finish the driver installation.
    Note: 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.

How to Change AHCI or RAID mode to IDE mode

1. Press [Win] + R or take the RUN option from the start menu.
2. Now type regedit there and press Enter Key to open up the Registry Editor Window.
3. If you receive the User Account Control dialog box, click Continue.
4. Locate and then click the following registry subkey:
   Code:

   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Pciide
   

5. click Modify on Start value
6. In the Value data box, type 0 [3 is default], and then click OK.
7. Close Registry Editor.
8. Restart your computer
9. Go to UEFI/BIOS and enable IDE, Save & Reboot

How to Change RAID mode to ACHI mode

How to Change AHCI mode from IDE mode After Windows Installation

How to Change SATA Modes After Windows Installation on Windows 7

1. Press [Win] + R or take the RUN option from the start menu.
2. Now type Regedit there and press Enter Key to open up the Registry Editor Window. (If you receive the User Account Control dialog box, click Continue.)
3. Locate and then click the following registry sub key:
   Code:

   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\msahci\Strat
   

4. then click Modify.
5. In the Value data box, type 0 [3 is default], and then click OK.
6. Close Registry Editor.
7. Restart your computer
8. Go to UEFI/BIOS and enable AHCI, Save & Reboot
9. Another restart will be required to finish the driver installation.