AHCI Hack and windows 8

Orionaut · 4 Jan 2013 at 19:42

Unfortunately I failed to set my BIOS to AHCI when I winstalled 8 On my SSD/HDD setup. (A common error it would seem

)

Now of course I cant change it and I would like to because my SSD performance is the poorest performer by far in my WE score (Only 7.3! I am hoping that this oversight is the cause of this)

I have found the "Reg Hack" solution for Win7 (Which I guess forces Win to load the appropriate drivers on reboot)

But I cannot find the "Msahci" entry in the Win8 registry directory that the hack refers too.

Is it (The Hack) a different procedure for win 8? If so what is it? (If not, what am I doing wrong? :confused:

)

Any help greatly appreciated.

wazza300 · 4 Jan 2013 at 19:57

yes its different,goodle enable ahci win8 and it should come up

here enable ahci without re install for windows 8

CurrentConfiguration\Services\storahci\startoverride

In that folder, the key/Dword was 0 with a value of 3. Change the value of 3 to 0.

Reboot

Enter Bios

Enable AHCI

Restart

Failed to find drives

Restarted again into bios

Checked AHCI confi, said it detected all drives

Restarted again

Orionaut · 5 Jan 2013 at 17:15

Sorted! Thanks!

(Upped disk performance by 0.6 WE's, Is that about what should be expected)

wazza300 · 5 Jan 2013 at 17:33

not sure in win8 its higher scoring,9.9 vs 7.9 on win7

Ripshod · 5 Jan 2013 at 18:56

WE isn't accurate. Bench the drive with ATTO or AS SSD bench and compare with some of the results posted on these forums.

One · 5 Jan 2013 at 18:59

Why is ACHI enabled in my BIOS, and yet in the registry my value is still 3?

wazza300 · 5 Jan 2013 at 19:06

desires said:
Why is ACHI enabled in my BIOS, and yet in the registry my value is still 3?

look in as ssd it will say iastor if it is and pciide if it isnt

Orionaut · 5 Jan 2013 at 19:37

Been playing with AS SSD and it would appear that mine is still slow as ####

R/W 198/58!

It is a Kingston SVP200S3120G on an asrock fatal1ty 990FX pro

It is working in AHCI and trim is enabled.

So what do I do now??

wazza300 · 5 Jan 2013 at 19:38

test in atto benchmark and post a screenshot here

Orionaut · 5 Jan 2013 at 20:12

Using ATTO (Assuming I am interpreting it correctly) things don't look so bad.

(Now for the embarrassing bit)

how do you post images? I have never posted my "Own" images before! only other peoples that have a link.

wazza300 · 5 Jan 2013 at 20:43

Upload to tinypic.com post forum url here

To take screenshot use snipping tool in windows accessories

Orionaut · 5 Jan 2013 at 21:18

Here is the AS SSD result

The ATTO is being a bit more problematic. I have saved results but they appear to be in a proprietary format that is not recognised as an image file by the file host.

Bear with me...

wazza300 · 5 Jan 2013 at 22:00

start/all programs/accessories/snipping tool

grab image and save as jpeg,upload to tinypic,post forum url here

Orionaut · 5 Jan 2013 at 22:55

Here we go...

Firstly the SSD

Just for fun I also have a report on my HDD setup (2 x 1Tb in software mirror)

Is everything working correctly or not? And if not, what can I do about it?

Cheers

wazza300 · 5 Jan 2013 at 23:00

Your speeds look fine to me

Orionaut · 5 Jan 2013 at 23:19

Thanks!

That's reassuring!

I used to do a lot of building back in the 90's/early Noughties (!) but I sort of lost track until very recently and am having to learn all over again (As it were)

Just done a big build (which I hope will last me for some time) and am wanting to ensure I am getting the best out of it.