Open AHCI mode for mechanical hard disk in Windows 8 system to improve hard disk performance

Hard disk modification AHCI mode can have certain performance improvement, but can not completely solve the hard disk bottleneck problem! If you don't have the money to buy a solid state drive, you can change your hard drive mode to AHCI mode. The older motherboard BIOS defaults to the native IDE mode for the best compatibility. If you have already installed Win8, you can't directly change it to AHCI mode, it will be blue screen! It must be modified by the following method:

Operation steps

Win8 has been installed to enable AHCI mode method:

(If installed) Uninstall Intel fast storage technology driver.

Shortcut Win+R – Enter regedit – Find the following two items to delete “StartOverride”:

HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\storahci Delete"StartOverride”.

HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\iaStorVDelete“StartOverride”.

Newly created notepad input <reg delete “HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\storahci\\” /v StartOverride /f ” Save as AHCI.bat, then right Run as administrator and select YES.

Restart Computer
Enter BOIS to open AHCI: Find Integrated Peripherals and change “SATA RAID/AHCI Mode” to “AHCI”.

Install INTEL's AHCI driver. If successful, you will see the SATA AHCI Controller in the Device Manager.