The Disk Defragmenter in Windows 7 and Windows Vista is scheduled to run every Wednesday at 1:00 AM. This article tells you how to disable the defragmenter schedule in case you’ve installed a third-party defragmenter, or modify the schedule accordingly.

Disk Defragmenter Scheduled Task

Click Start, type dfrgui.exe and press {ENTER}. When you are prompted for an administrator password or confirmation, type the password or provide confirmation. To disable defragmenter schedule, uncheck the following option:

If you’re using Windows Vista, enable the Run on a schedule (recommended) checkbox, and click OK

In case you want to modify the defragmenter schedule, click the Modify schedule… button, and select the frequency, time in the resulting dialog.

If you’re using Windows 7, the user interface varies a bit, and appears as below:

Schedule is enabled by default. In case its disabled in your system, click the Turn on schedule… button.

Click the Run on a schedule (recommended) checkbox, and there you can modify the day and time accordingly.


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One Comment

  1. said this on Saturday, March 6th 2010 11:11 pm

    Thanks for the tutorial, I never knew you could schedule a defrag to be done on Windows! (You learn a new thing every day!)

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