DRVSPACE /DEFRAGMENT -- Example To defragment compressed drive D, you would type the following at the command prompt: drvspace /defragment d: To defragment the current compressed drive, type the following command: drvspace /defragment To defragment compressed drive C as much as possible, type the following commands: defrag c: drvspace /defragment /f c: drvspace /defragment c: