How To Increase Your Vista Hard Drive Speed
Here's a couple of simple tweaks that will significantly increase the speed of your Vista hard drive.Enable Advanced Performance
Click Start then Control Panel
Open Device Manager
Expand the Disk drives branch
Double-click on your disk drive to open Device properties
Click on the Policies tab
Check Enable advanced performance
Click Ok
Turn Off Low Disk Space Warning
Open Registry Editor- Start Menu > Run > type regedit
Go to HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Policies\Explorer
Right click on the right pane and select New Dword (32 bit) Value
Enter NoLowDiskSpaceChecks and hit Enter
Right click on the new Dword and click Modify
Change the data to 1
Click Ok
http://support.microsoft.com/kb/259716
NOTE: Enabling write caching generates the following warning. This is normal: By enabling write caching, file system corruption and/or data loss could occur if the machine experiences a power, device or system failure and cannot be shutdown properly.