Windows 7: AHCI : Enable in Windows 7 / Vista

Bare Foot Kid · 07 Feb 2010

AHCI : Enable in Windows 7 after OS install

AHCI Advanced Host Controller Interface makes...

Click here to read the entire tutorial

belikexp · 22 Apr 2010

Ok great tutorial and works except....
I reran the assessment for the hard drive and received this..
Do I uninstall a driver?

Bare Foot Kid · 22 Apr 2010

Hello belikexp.

Did it list the driver causing the problems?

belikexp · 22 Apr 2010

None that I noticed. Did a google search someone mentioned enabling write cache but that doesnt make sense. It is enabled though.
I'll reboot and run again.

belikexp · 22 Apr 2010

After setting the registry; rebooting and setting the AHCI in the BIOS. If you re-run the assessment it only ran the hard drive only. The secound time rebooting I ran the assessment again and it ran the whole series of tests. No errors. So we need to reboot twice?
I saw no improvement for Sata hard drives.

Bare Foot Kid · 22 Apr 2010

Quote: Originally Posted by belikexp

After setting the registry; rebooting and setting the AHCI in the BIOS. If you re-run the assessment it only ran the hard drive only. The secound time rebooting I ran the assessment again and it ran the whole series of tests. No errors. So we need to reboot twice?

Yes, change the reg entry and reboot to change the BIOS then install the drivers then reboot again to finish; so you got it sorted?

belikexp · 22 Apr 2010

Quote: Originally Posted by Bare Foot Kid

Quote: Originally Posted by belikexp

After setting the registry; rebooting and setting the AHCI in the BIOS. If you re-run the assessment it only ran the hard drive only. The secound time rebooting I ran the assessment again and it ran the whole series of tests. No errors. So we need to reboot twice?

Yes, change the reg entry and reboot to change the BIOS then install the drivers then reboot again to finish; so you got it sorted?

Actually I had to reboot once more. Then everything is fine.

Bare Foot Kid · 22 Apr 2010

Quote: Originally Posted by belikexp

Quote: Originally Posted by Bare Foot Kid

Quote: Originally Posted by belikexp

After setting the registry; rebooting and setting the AHCI in the BIOS. If you re-run the assessment it only ran the hard drive only. The secound time rebooting I ran the assessment again and it ran the whole series of tests. No errors. So we need to reboot twice?

Yes, change the reg entry and reboot to change the BIOS then install the drivers then reboot again to finish; so you got it sorted?

Actually I had to reboot once more. Then everything is fine.

At least you got it.

thanks for the update.

atlcraig · 22 Apr 2010

Thanks for the help. One other question, since I already have Windows 7 installed and I didn't haveAHCI turned on the drivers weren't loaded. How do I get the drivers loaded now? Thanks again for the help, Atlcraig

Dave76 · 22 Apr 2010

Quote: Originally Posted by architect

hello,
isnt it possible to have raid and ahci activated at the same time??

Raid actually runs under AHCI, If you want to continue using RAID don't change to AHCI.

You can run in RAID with no drives in actual RAID, and get the benefits of AHCI.

Quote:

Many SATA controllers offer selectable modes of operation: legacy Parallel ATA emulation, standard AHCI mode, or vendor-specific RAID. Intel recommends choosing RAID mode on their motherboards (which also enables AHCI) rather than the plain AHCI/SATA mode for maximum flexibility, due to the issues caused when the mode is switched once an operating system has already been installed.[2] Legacy mode is a software backward-compatibility mechanism intended to allow the SATA controller to run in legacy operating systems which are not SATA-aware or where a driver does not exist to make the operating systems SATA-aware.

atlcraig · 22 Apr 2010

I have changed the setting with regedit and created a restore point in windows 7. I then went into the BIOS and enabled AHCI. When I booted the system up after that I got themessage ERROR LOADING OS and now can't get the computer to boot. I had to get on one of my other computers to get back here. I need help now. Can anyone give me an idea on what I need to do now?????

Windows 7: AHCI : Enable in Windows 7 / Vista

AHCI : Enable in Windows 7 / Vista problems?