How to Enable AHCI to speed up hard drive performance in Windows 7

Topic: Windows 7 Product: Windows 7 Related Articles: uefi ahci drive virtualbox ahci performance ahci speed

I've heard there is an AHCI mode in SATA hard drives, but I do not know more about it, and how to enable AHCI to speed up hard drive performance in Windows 7, could you help me?

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Solution

AHCI describes a PCI class device, mainly plays the role of an interfacein between the system memory and Serial ATA devices.

AHCI includs a PCI BAR (base address register) to achieve the native SATA function. As the AHCI successfully develops a unified interface,allow the Serial ATA product development work greatly simplified. It can achieve a number of features including NCQ (Native Command Queuing).

The Advanced Host Controller Interface(AHCI) will speed up read and write operations of the hard drive if the hard drive supports AHCI.

Click the "Start" button,and type in "regedit" in the blank, then press Enter.
Browse the list as
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci.
$Browse the list as HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci$
Locate the parameter "Start" on the right side.
Double click it to change its value from 3 to 0.
Restart the computer and the you have enabled AHCI to speed up hard drive performance in Windows 7.

Tips

When we transfer files from one disk to another, or open and save files from one hard drive, we can find the speed of reading and writing different among some hard drives, or USB stick or other storage devices. Do you want to use a very useful tool to test the speed as a disk criterion?

How to Enable AHCI in Windows 7

In Windows 7 AHCI enables native command queuing and hot-plugging through SATA host controllers (Serial-ATA) for your hard drives. If you change the SATA mode of the boot drive, you may have to enable the AHCI driver in the registry first.

How to Improve Hard Drive Performance

"How do I speed up my computer?"It is the most common question maybe.At first ,you should improve your hard drive performance.Here is some tips to Improve Hard Drive Performance.

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