Defrag restarts and never completes checking the hard drive.

Question

Defrag restarts and never completes checking the hard drive.

Cause

This issue is caused when other programs or files are being accessed in the background as defrag is being ran. If defrag detects any file change while being ran it will restart.

Answer

To resolve this issue make sure all open programs are closed and close all background programs. If doing this does not resolve your issue you can also run defrag through Safe Mode.

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  • Defrag help
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  • Microsoft
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