Setting AHCI after Windows installation

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Setting AHCI after Windows installation

Post #1 by huddy » Fri Sep 19, 2014 11:33 am

If you have forgotten to set the SATA type in your BIOS before installing windows, all is not lost. Here is a simple work around that I've used on many occasions.

If you are not sure if AHCI is enabled, do the following:

enter CMD in start bar, then type the following in the command window:

Code: Select all

fsutil behavior query disabledeletenotify

0 = ON, 1 = OFF

Let's assume it's off...

You'll need to be familiar with changing the Windows registry though.

1. From Windows launch regedit from the search box and run as administrator.

2. Navigate and expand to the following hive on the left hand pane.


3. Either right click and select modify or double click on msahci on the right hand side of the screen.

4. Change the current value to "0" (zero) then click ok.

5. Close regedit.

6. Reboot PC and head straight into the BIOS (Delete key or F2 after POST screen normally)

You will now need to change the SATA type to AHCI as shown below.


Each motherboard is different so consult your manual if you can't find the SATA type option.

7. Once the PC has restarted, the appropriate AHCI drivers will load. You may need a final restart.

Done :thumbup:

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