1.) Go to Intel's download center and download the latest version of the Intel Matrix Storage Manager for your OS:
**Keep this file as you'll need it again in step 5.
2.) Run the installer with the -a switch to extract the files. This will NOT install the software, just extract the files. Follow the prompts as if you were installing the software:
filename -a
The above should extract the files to \Program Files\Intel\Intel Matrix Storage Manager. There are two folders, \Drivers and \Drivers64 for 32-bit and 64-bit OS's, respectively.
3.) Copy the file IaStor.sys from the Drivers folder to C:\Windows\System32\drivers\
4.) Copy and paste into Notepad the following registry info and save to your desktop as ahci.reg
Code:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3A22&cc_0106]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor]
"Type"=dword:00000001
"Start"=dword:00000000
"Group"="SCSI miniport"
"ErrorControl"=dword:00000001
"ImagePath"="system32\\drivers\\iaStor.sys"
"tag"=dword:00000019
"DisplayName"="Intel AHCI Controller"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters]
"queuePriorityEnable"=dword:00000000
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Enum]
"0"="PCI\\VEN_8086&DEV_3A22&SUBSYS_B0051458&REV_02\\3&13c0b0c5&0&FA"
"Count"=dword:00000001
"NextInstance"=dword:00000001
5.) Double check you've copied the IaStor.sys file as part of step 3. Now do the following:
-Run the ahci.reg file to add the entries into the registry
-Reboot the computer and enter the BIOS -
DO NOT allow it to start Windows yet.
-Change the setting for the on board Intel controller to AHCI, save and exit BIOS
-Boot into Windows
When Windows loads it will detect a new hard disk -- cancel the wizard for installing the new hardware and run the Intel driver installer you downloaded in step 1. Reboot the system again and you're good to go. Now, under Device Manager -> "IDE ATA/ATAPI controllers" you should see "Intel(R) ICHx SATA AHCI Controller" listed.
6.) In Device Manager, double klick your hard-drive(s) under "Disk drivers", go to "Policies" tab and mark "Enable write caching for this disk" if not already enabled.
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