Enabling AHCI after windows install?

mrbios · 10 Jan 2009 at 00:24

I've read that there are ways to do this but only ways that seem to work in XP, i've tried the same ones under vista but it didn't work

Can anyone tell me if there is a way to enable AHCI after installing windows 64bit?

ChrisLX200 · 10 Jan 2009 at 01:14

I don't recall any issues in Vista32 other than just changing the setting in the BIOS (ASUS P6T). I enabled it after installing the OS trying to get eSATA working. Maybe your problem is motherboard-specific?

fornowagain · 10 Jan 2009 at 02:57

Vista does have native support for AHCI. If you just enable it you may end up on the Windows drivers. Getting the Intel drivers to work is possible.

See also > http://support.microsoft.com/kb/922976

littlepuppy · 10 Jan 2009 at 16:38

just enabled it on mine, reinstalled the disks and rebooted and it was fine.

R34pz · 10 Jan 2009 at 18:46

1. Exit all Windows-based programs.
2. Click Start, type regedit in the Start Search box, and then press ENTER.
3. If you receive the User Account Control dialog box, click Continue.
4. Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
5. In the right pane, right-click Start in the Name column, and then click Modify.
6. In the Value data box, type 0, and then click OK.
7. On the File menu, click Exit to close Registry Editor.

This worked for me, hope it helps

mrbios · 10 Jan 2009 at 18:47

R34pz said:
1. Exit all Windows-based programs.
2. Click Start, type regedit in the Start Search box, and then press ENTER.
3. If you receive the User Account Control dialog box, click Continue.
4. Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
5. In the right pane, right-click Start in the Name column, and then click Modify.
6. In the Value data box, type 0, and then click OK.
7. On the File menu, click Exit to close Registry Editor.

This worked for me, hope it helps

fornowagain said:
Vista does have native support for AHCI. If you just enable it you may end up on the Windows drivers. Getting the Intel drivers to work is possible.

See also > http://support.microsoft.com/kb/922976

Cheers guys that seemed to do the job

R34pz · 10 Jan 2009 at 18:47

Don't forget to go into your BIOS and change your settings to AHCI.

zo1d · 10 Jan 2009 at 19:57

Does this method work for both vista and xp?

mrbios · 10 Jan 2009 at 20:42

zo1d said:
Does this method work for both vista and xp?

in XP you have to install the driver before enabling AHCI i think so it wouldnt work this way, google will bring up a few decent results

chainy · 11 Jan 2009 at 23:06

R34pz said:
1. Exit all Windows-based programs.
2. Click Start, type regedit in the Start Search box, and then press ENTER.
3. If you receive the User Account Control dialog box, click Continue.
4. Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
5. In the right pane, right-click Start in the Name column, and then click Modify.
6. In the Value data box, type 0, and then click OK.
7. On the File menu, click Exit to close Registry Editor.

This worked for me, hope it helps

This defo works in vista home 32 bit. Tried it the other day. Kinda pointless as I had to re-install a few days later to set up my raid array. Oh well

liquidex · 12 Jan 2009 at 05:33

zo1d said:
Does this method work for both vista and xp?

I just did this in Xp recently. This is a good guide

http://expertester.wordpress.com/2008/07/27/how-to-enable-ahci-windows-xp/

zo1d · 12 Jan 2009 at 11:05

liquidex said:
I just did this in Xp recently. This is a good guide

http://expertester.wordpress.com/2008/07/27/how-to-enable-ahci-windows-xp/

Thanks for the link will try that tonight!