Tom's Hardware > Forum > Motherboards & Memory > Chipsets & Bios > [Solved] How do I change HDDs from IDe to ACHI without reinstalling Windows 7

[Solved] How do I change HDDs from IDe to ACHI without reinstalling Windows 7

Forum Motherboards & Memory : Chipsets & Bios - [Solved] How do I change HDDs from IDe to ACHI without reinstalling Windows 7

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Best answer from evongugg.

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og954   11-12-2009 at 08:21:23 PM

This is my fist build, and thankfully with the help of Tom's Hardware forums, it was successful. Everything worked fine except for the fact that I get this message every startup saying "SATA detected running in IDE do you want to change to ACHI?" I changed it and windows 7 didn't want to boot. I did a little research and then switched it back to IDE just to get the computer running again.

Is there any way of switching to ACHI without a fresh install of Windows 7?

FWIW I have a GIGABYTE GA-MA785GMT-UD2H AM3 AMD 785G HDMI Micro ATX AMD Motherboard.


Message edited by og954 on 11-12-2009 at 08:21:59 PM
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Best answer from evongugg
To resolve this issue, enable the AHCI driver in the registry before you change the SATA mode of the boot drive. To do this, follow these steps:

Exit all Windows-based programs.
Click Start, type regedit in the Start Search box, and then press ENTER.
If you receive the User Account Control dialog box, click Continue.
Locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci
In the right pane, right-click Start in the Name column, and then click Modify.
In the Value data box, type 0, and then click OK.
On the File menu, click Exit to close Registry Editor.
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og954   11-12-2009 at 08:24:10 PM

Also I downloaded the latest ACHI driver for the mobo via Gigabyte's website and it says that it needs to be installed pre-windows via F6.

Reply to og954
evongugg   11-12-2009 at 08:26:43 PM
Best answer

To resolve this issue, enable the AHCI driver in the registry before you change the SATA mode of the boot drive. To do this, follow these steps:

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

Message quoted 1 times
Reply to evongugg
MRFS   11-12-2009 at 08:45:42 PM

There is also a long thread on that same subject in PC Perspective's
User Forums here:

http://forums.pcper.com/showthread.php?t=444831


MRFS

Reply to MRFS
og954   11-12-2009 at 08:51:35 PM

evongugg wrote :

To resolve this issue, enable the AHCI driver in the registry before you change the SATA mode of the boot drive. To do this, follow these steps:

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



That was quick. Thanks evongugg, all my SATA components are now running in ACHI and Windows booted properly. Thanks again.

Reply to og954
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