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How do I enable AHCI?

post #1 of 9
Thread Starter 
How do I know its enabled or if its not, how can I?
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Kick-Ass
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post #2 of 9
It is in bios settings, it is under chip settings I believe (although it may vary from motherboard to motherboard) Default is usually set to IDE.
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post #3 of 9
Be warned, changing directly from IDE to AHCI will destroy your installation of Windows. You need to install the AHCI drivers BEFORE making the change. Or reinstall Windows with it set to AHCI in the BIOS.
post #4 of 9
In the Chipset / 'Sata type' options in BIOS.
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post #5 of 9
Easiest way is to run AS SSD It will tell you what driver you're using.

If in IDE mode you don't have to re-install Windows to switch to AHCI. Just follow these steps:

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 (default value = 3)
On the File menu, click Exit to close Registry Editor.
Now reboot into your BIOS and switch to AHCI
Reboot
Windows will "install new hardware"
Reboot
Finished
post #6 of 9
Quote:
Originally Posted by tw33k View Post
Easiest way is to run AS SSD It will tell you what driver you're using.

If in IDE mode you don't have to re-install Windows to switch to AHCI. Just follow these steps:

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 (default value = 3)
On the File menu, click Exit to close Registry Editor.
Now reboot into your BIOS and switch to AHCI
Reboot
Windows will "install new hardware"
Reboot
Finished
Great tip. I'll refer to that if I ever need it. So for SF drives, AHCI mode is the best to use, correct? I'm about to install one... so I should just set it to AHCI mode in the BIOS and then install as normal?
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Paradise
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post #7 of 9
Quote:
Originally Posted by PeaceMaker View Post
Great tip. I'll refer to that if I ever need it. So for SF drives, AHCI mode is the best to use, correct? I'm about to install one... so I should just set it to AHCI mode in the BIOS and then install as normal?
Yes....
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post #8 of 9
In Asus boards it is under I think "storage settings" on the first page
post #9 of 9
posting for good info.
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