Program is named Defrag.exe for easy identification: The Program closes the built in Windows XP Command line defrag.exe program when it is completed or manually stopped, using unique identification so it closes the correct program, and not itself. This is required so the program does not hang when prematurely terminated. Also the FAT32 and NTFS Windows Defrag programs which run in the background, are closed as well. Switches: To add a switch, first save the file somewhere it cannot be deleted by accident, such as in its own folder. Create a shortcut of the file then open that shortcut's properties. Add one of the following switches after the "Target" path. You could then just drag that Shortcut to the Start Up section on the Programs Menu, or add it to Task Scheduling (see website for more details on switches and scheduling). Terms: This is free software and we are not to be held responsible nor liable for damage from the use or misuse of this software.