Windows 10: Attn. SSD owners - Enabling AHCI mode AFTER Windows 10 installation.

10x , worked just fine

 

I too just registered to say, THANK YOU! The process worked like a charm and I am now Windows 10 sees all my SATA drives.

Toobad, thank you once again. I never would have figured this out on my own.

 

Somewhere on the Web I found a simpler alternative: Just use MSCONFIG to boot to Safe Mode (then change IDE or Compatibility to AHCI) then use MSCONFIG again to change boot back to normal (or Selective, if you prefer). It worked smoothly for me, when the command line did not, and I wasn't having fun entering Safe Mode with Function Keys during the POST, either.

Here are more details if anybody needs them:
In my Windows 10, typing MSCONFIG in the Windows search bar finds the System Configuration app (MSCONFIG to its old pals). Open it.
Choosing the "Boot" tab at the top shows a section called "Boot options", including a check-box for "Safe boot". Check it. ("Minimal" seems to work fine. Probably several others are also fine.)
Then Restart, which should go straight to Safe mode.
At the very start of the reboot, right after Windows closes, I started hitting F1 & F2 & maybe F8, until I saw a symbol or text that said I was going into BIOS editing mode. (I think F1 is the key that actually works on my Thinkpad x120e.)
In BIOS editing mode, I went to the right then down to something like SATA mode, then changed Compatibility to AHCI and chose Save & Exit. That rebooted -- now using MS's AHCI driver! -- but still in Safe Mode.
I again opened MSCONFIG and UNchecked the "Safe boot" check-box and rebooted again, this time to W10 normal mode.
Done!

I hope it works for you and others too -- and thanks to the mystery person who posted it somewhere for me to find!

 

Thank you, the OP solution worked like a charm for me in Windows 10 Pro x64.

 

Thanks Toobad for fixing my issue.