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

Hi all!
I am writing you from Italy... first of all thanks to Toobad's help, I will try to apply his tutorial to my pc.
I bought a new SSD for my pc, I installed it and then I upgraded my Win7 pro to the new Win10 pro (64bit), but I didn't get as such speedy improvement as I expected, so I begun reading on the net and I found many tutorials that suggest to activate the AHCI. I tried to follow one of them that suggest to change a value into the regedit but I couldn't find the required voice (I think that perhaps something's changed from Win7 to Win10...). I created manually this voice, restarted the pc and changed from IDE to AHCI into my boot. Starting the PC it went to recovery mode, in an infinite loop.
So I restored the boot parameters (IDE) and restarted, but probably my regedit new voice wasn't a good idea for Win10.
Finally I had to use a restore point to launch properly my pc.
Now I have some fear to touch anything else, but I know that I must to it...
A question: I installed the SSD into the only free port I had, the nr. 4 (of 6 total); is it better to put it into the first one or is it the same thing?
This evening I will try again following these steps...
Thanks!
Andrea

 

I just stuck in a Samsung 850 Pro in my laptop , used the command prompt with a few Diskpart commands and the new SSD showed that it was in ACHI mode so no issues .

Things usually don't go this well , seems "Samsung's Magician " is still not working or offering "Rapid Mode" in Win 10.

 

Hi, I found somewhere that you should install a previous version (4.4) to allow the Rapid Mode, and than, after the install, update to the latest one. But if you disable it with the last version installed you must uninstall it, install the previous, able it and update Magician... I don't know if it's true or not, I didn't try.
Anyway thanks to Toobad's suggests I was able to activate properly the AHCI mode and to have a SSD fully working.
And yes, my pc is faster, but not as faster as I hoped. I am a photographer using software as Adobe Lightroom and Photoshop. I put any file (photos) into the same SSD disk and it's fast, but not very very fast.
Trying with Magician the benchmark are these:



Is there something that I could do to improve it or may I be satisfied?
Thank you!
Andrea

 

They must have made this a lot easier in Win8.1/10 because I remember doing this on Windows 7 years ago and it was a doable but a nightmare. Glad they finally made this process a little more bearable.

 

I ran the "Magician" software and despite it working i don't think the #'s are accurate , my system feels no different than when i used a much slower SSD.

Rapid mode does not work yet but i heard that just pumps the #'s but shows no real gain in actual use.

 

I tried this with my win 8.1 and win 10, in the BIOS I changed it to AHCI, it sticks in the BIOS, but samsung magician still says it is in IDE mode.

Just tried Samsung Magician 4.4 and it can't find my Samsung Evo 850!

 

If you look in Device Manager under IDE ATA/ATAPI Controllers and at the bottom see the AHCI drivers, you are in AHCI mode. Just make sure you are connected to a port controlled by the Chipset (0-3 is usually recommended). Here is mine.





Here is a Tutorial on how to do it. It works in Windows 7 and Windows 8/8.1, I haven't tried it in Windows 10 yet, but it should work.
AHCI : Enable in Windows 7 / Vista - Windows 7 Help Forums

 

I don't see that option while following the tutorial

 

That is not a part of the tutorial.

 

I think it is , the tutorial shows finding the "msahci" in regedit and my system doesn't show that file.

 

Look for the storahci.sys driver.

 

Unfortunately i don't seem to have that one on my system , don't know why . My system shows AHCI mode in BIOS though .

 

To show up in registry, AHCI driver has to be installed first. Probably iastor.sys

 

Mike, in IDE mode, the AHCI drivers are not installed. The registry edit 'forces' Windows to load them. A start value of 3 is not loaded. Changing it to 0, makes it load them if you reboot and change the BIOS to AHCI. That's really the whole purpose of the tutorial. I have always wondered why you couldn't install Intel Rapid Storage which contains iaStorV which is the Intel AHCI driver, then change the BIOS value.Maybe you could, I have just never tried it.

 

Not sure about Intel but have done it an AMD systems.