Windows 7: AHCI : Enable in Windows 7 / Vista

That's just it guys, I have the latest nVidia drivers installed, and it still shows up like the screenshot.

OCZ Technology says not to activate AHCI:

AHCI
AHCI is not official supported on OCZ SSDs and may under some circumstances affect performance, specifically during windows installation. Enabling AHCI can result in higher performance in synthetic benchmarks for SSDs and HDDs alike, but can cause hang-ups and intermittent freezes in SSDs since it allows multiple access requests to compete for a drive that is not made to address re-ordering of commands in the queue. We recommend AHCI is set to disabled in both Windows and in the BIOS.
Native Command Queuing greatly increases the performance of standard rotational drives but it has no bearing on SSDs.

They should get Intel then eh, I've been using my Intel X25 M 80GB G2 for about 10 months and haven't had one single issue; I couldn't count the number of re-installs (with 'clean all' - secure erase) I've done while working on this.


SSD / HDD : Optimize for Windows Reinstallation



Thanks for taking time to post the info though.

The address "res_old" makes me wonder just how old this article is.

Can you post the address that it originated from?

This is for early editions of their SSDs.

Edit:
From the OCZ support site,
If using an Intel chipset based system please use the newest Intel chipset drivers for Vertex LE, vertex2 and Agility2

This is for the gen2 versions, with FW updates AHCI should be the best way to go on all OCZ SSDs.

And this from 'Official Staff':


Please, take care to post accurate information, we don't want to give the wrong guidance to other viewers.

Thanks ! Just what I needed.

Hello dengland, welcome to Seven Forums; glad we could be a help.

Hey All,

First off my system:
Motherboard: Asus P7P55D Pro
CPU: Core i7 2.8ghz
Video Card: ATI 5850
Ram 8gb DDR3
HDD: 500gb Sata II
OS: Windows 7 Pro 64bit

My problem.

I followed the tutorial, went into the registry, and tried to edit the value of msachi and noticed that start was already set to 0. I then went into bio and set it to ACHI mode. Upon reboot the computer got to the nice little windows 7 orbs that form the logo and then rebooted. I switched back to IDE, returned to windows figuring I had to download the drivers.

I went to the Asus site and found the Intel Sata drivers. When I tried to install them it said "you do not meet the minimum system requirements" I then went to the intel site and downloaded their "Matrix Storage manager" and "Rapid Storage Technologies" Upon trying to install each of these I got the same "minimum system requirements error".

At this point I am out of ideas, and would value any suggestions.

Hello bearcave, welcome to Seven Forums!





If the value in the registry was at ' 0 ' to start with, AHCI was already enabled in Windows.

That's what I had figured,

but why then would it just continually reboot when I set it to AHCI mode in the bios?

Something is out of order, if it's not/wasn't set in the BIOS to AHCI, Windows automatically disables the AHCI drivers during OS install.
Do you have a lot of data to lose if you re-install; just asking.



These are the wrong ones, as far as I know; I haven't used this technology.