For the Mac® equivalent, visit our Repair Disk Permissions and Repair Disk guide.

Run ScanDisk and Disk Defragmenter regularly to keep system file management at peak performance. Make sure you have closed all background applications, as they may cause issues.

Please make a selection.

Windows® 10

ScanDisk

  1. Click Start.
  2. Type This PC and press Enter.
  3. Right-click the hard drive you want to scan and select Properties.
  4. Select the Tools tab.
  5. Click Check.

Defrag

Do not perform disk defragmentation on Solid State Drives. If you aren't sure what type of disk drive you have, consult your PC manufacturer.

  1. Click Start.
  2. Type This PC and press Enter.
  3. Right-click the hard drive you want to defragment and select Properties.
  4. Select the Tools tab.
  5. Click Optimize.
  6. Select the drive or volume and click Optimize.

Windows® 7 and Windows® 8.1

ScanDisk

  1. Click the Start button (Windows Key + Q in Windows 8).
  2. Click Computer.
  3. Right-click the hard drive that you want to scan.
  4. Click Properties.
  5. Select the Tools tab.
  6. Under Error-checking, click Check Now.
  7. Select Scan for and attempt recovery of bad sectors and Automatically fix file system errors.
  8. Select Yes to schedule after restart.
  9. Restart your computer to run the scan.

Defrag

  1. Click Start (Windows Key + Q in Windows 8).
  2. Select Computer.
  3. Right-click the hard drive that you want to defragment.
  4. Select Properties.
  5. Click the Tools tab.
  6. Under Defragmentation, click Defragment Now.
  7. Select the volume to defragment.
  8. Click Defragment.