It worked in XP but I had to wrangle it a bit. If you first select a different drive in the drives list (preferably A:) and then first create a "Now" schedule for the drive you want, and then click ok to create the schedule. After that you can go back in and change it to a daily, weekly, or monthly schedule. Check the windows xp control panel to see what schedules have been created. I also noticed that when df.exe runs scheduled it doesn't have a window... i.e. it's running as a hidden task. This can be a pain if you want to end the defrag session. Oh well.. it's free and it seems to do a great job. Microsoft should have done this years ago those silly turds
