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This guide will teach you how to do a manual disk defrag through the Windows command prompt. Some Windows users have trouble with the Disk Defragmenter program so this is a solution to that problem, and might come in handy for other instances, too.

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  2. /U'
  3. This will take some time depending on how large and fragmented your disk is.
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      Tips

      • If you have more than one disk that needs to be formatted, add it in to the command, like this 'defrag C: F: /U'
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      Warnings

      • Do not close the command prompt once you have started the command. This may cause damage to your files.
      • Solid State Drives do not need to be defragmented. This only wears them out.
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