Improve SATA disk performance in Vista

Do you have a SATA disk drive in your computer? If so, you improve performance out of your hard disk. This speeds up the performance of your hard disk by enhancing write caching.

Press and hold Windows Key on keyboard and press R. It will open Run Window. Type the following in the open box and click OK

devmgmt.msc

OR

Click Start, and then right-click Computer. Select Properties, and then click Device Manager in the left panel of the window.

Click on the + sign near Disk Drives (Expand Disk Drives)
Right click on your hard drive and select Properties.
On the Policies tab, check Enable advanced performance.
Hit OK and close Device Manager.!!