AHCI problems

wallyinnc said:

Good point, some motherboards have featues that won't work on all SATA connections (sometimes only SATA 0 to 2 for example). JK, have you checked that?

What do I check? My MB is supposed to be fully SATAII compatible.

Check your MB manual and see if they have different things supported in different SATA connectors.

I see now, looking through my MB manual, I need to create a driver diskette after enabling AHCI. Unfortunately, I do not have a floppy drive. More Google searching, I guess.

erica647 said:

The following is something I was able to do on an earlier Vista build and it seemed to work fine. Just install your sata drives with the bios set to ide mode and do the following:

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.

Then just reboot to your bios and change back to AHCI mode. Windows should come up and recognize the new mode which you can confirm in device manager.

Hmm... I will test it. Welcome to the Forums!

You may need to have the AHCI driver off the mobo CD or from their Support>Downloads page for your mobo model. This was true in a case here yesterday.

Put it into the installer from stick/CD on the Add Drivers link at Custom> Drive selection screen. Or tap F6 during driver loading to see if you can get it in earlier.

If you have WIn7 on the computer now, AHCI should be the SATA driver you are using if mobo is AHCI capable and set AHCI. Check the Device Manager.

The debate here recently on AHCI seemed to point to no real advantage.

gregrocker said:

I believe you need to have the AHCI driver off the mobo CD or from their Support>Downloads page for your mobo model.

Put it into the installer from stick/CD on the Add Drivers link at Custom> Drive selection screen. Or tap F6 during driver loading to see if you can get it in earlier.

If you have WIn7 on the computer now, it should be the SATA driver you are using if you're mobo is AHCI capable and set that way.

Somehow it is fixed. Could be I installed from a DVD instead of a thumb drive, or it could be I stuck the drivers on the thumb drive, and Setup found them when it installed.

I'm not sure. I will post back later when I boot from that HD again. I installed it just to see if it would work. Now I am using my main OS again.