Note: This tweak only works on Windows XP/.NET. Description: This setting will rearrange files on the hard drive when the computer is idle thus improving the performance of the system. Steps: 1. Open your registry by clicking on Start > Run > Type: "regedit" and find or create the key below. 2. Create a new DWORD value, or modify the existing value, called "EnableAutoLayout" and set it according to the value data below. Code: System Key: [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\OptimalLayout] Value Name: EnableAutoLayout Data Type: REG_DWORD (DWORD Value) Value Data: (0 = disabled, 1 = enabled) 3. Exit your registry, you may need to restart or log out of Windows for the change to take effect.