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AHCI on but still shows ide in bios

post #1 of 11
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I just did a fresh install of win 7 on my c300 64gb, and I set ahci on and the sata controller to sata 6gb. But in the bios it still lists it as ide. Any idea why and how to fix it?
    
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post #2 of 11
Where did you set the AHCI mode?

Does that motherboard have more than one SATA controller? If so, which one did you enable to AHCI and which one is your SSD plugged into?
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post #3 of 11
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post
Where did you set the AHCI mode?

Does that motherboard have more than one SATA controller? If so, which one did you enable to AHCI and which one is your SSD plugged into?
I set it in drive configuration in bios, I set sata ports 1-4 to ahci, and 5-6 to ide, and yes, it's plugged into port 1 and my dvdrom in in 5.
    
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post #4 of 11
Quote:
Originally Posted by Jonesey I7 View Post
I set it in drive configuration in bios, I set sata ports 1-4 to ahci, and 5-6 to ide, and yes, it's plugged into port 1 and my dvdrom in in 5.


You set one controller to AHCI and the second controller to IDE.

The BIOS lists one as IDE... because you set it to IDE?
So what is the issue?
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post #5 of 11
Thread Starter 
Quote:
Originally Posted by DuckieHo View Post
You set one controller to AHCI and the second controller to IDE.

The BIOS lists one as IDE... because you set it to IDE?
So what is the issue?
No no, it lists my dvd aswell as my ssd as ide
    
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post #6 of 11
There is a driver you need to install for Windows... I just did this a week ago. I know there is a how-to floating around, I'll see if I can find the one i used.
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post #7 of 11
Quote:
Originally Posted by eazy View Post
There is a driver you need to install for Windows... I just did this a week ago. I know there is a how-to floating around, I'll see if I can find the one i used.
I don't believe that driver has anything to do with the BIOS not showing AHCI.

I certainly didn't install it when I set up Win7, and my BIOS shows AHCI just fine.
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post #8 of 11
here's the Microsoft support page with the AHCI driver download and install info:
http://support.microsoft.com/kb/922976

I didn't have that specific error, but apparently you cannot use AHCI until you install that in Windows, fixed my problem and allowed AHCI immediately.

Quote:
Originally Posted by pursuinginsanity View Post
I don't believe that driver has anything to do with the BIOS not showing AHCI.

I certainly didn't install it when I set up Win7, and my BIOS shows AHCI just fine.
Good point... my BIOS still showed AHCI before I installed this. I have no idea then.
Edited by eazy - 12/22/10 at 11:20am
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post #9 of 11
Thread Starter 
Quote:
Originally Posted by eazy View Post
here's the Microsoft support page with the AHCI driver download and install info:
http://support.microsoft.com/kb/922976

I didn't have that specific error, but apparently you cannot use AHCI until you install that in Windows, fixed my problem and allowed AHCI immediately.



Good point... my BIOS still showed AHCI before I installed this. I have no idea then.
My bios shows ahci just fine, but under hard drives, it lists it as an ide. Also that link is for intel, I'm amd. ANyone?
Edited by Jonesey I7 - 12/22/10 at 11:29am
    
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post #10 of 11
Quote:
Originally Posted by Jonesey I7 View Post
My bios shows ahci just fine, but under hard drives, it lists it as an ide. Also that link is for intel, I'm amd. ANyone?
It's a registry edit is what you want off that page... there isn't a driver on there, sorry.

Quote:
Vista was the first Windows OS to support AHCI out of the box, where as Windows 7 does the same. But an issue with AHCI is that if you install the OS without enabling AHCI in the BIOS, enabling it after installation will render your OS unusable. This is because Windows disable the AHCI driver since it is not needed during the installation.

There is one way to fix this, although you need to have knowledge of registry editing. The detailed steps from Microsoft are as follows:

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:
  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_MACHINESystemCurrentControlSetServicesM sahci
  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.
After this you’ll have to restart your computer, go to BIOS and enable AHCI. When you log in to Windows again, you’ll notice the installation of drivers for AHCI. Another restart will be required to finish the driver installation.

I’ve simplified the steps by Microsoft by exporting the registry key. Just download the following file and run it. You’ll still need to go through the steps of restarting your computer and enabling AHCI in the BIOS.
http://www.ithinkdiff.com/how-to-ena...-installation/
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