Chkdsk On External Drive Fix 'link' -

: Press the Windows Key , type cmd , right-click on Command Prompt , and select Run as administrator .

: Scans for bad clusters and free space (this part takes the longest). Common Issues & Troubleshooting Problem "Access Denied" You must run Command Prompt as an Administrator . "Drive is in use" chkdsk on external drive fix

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If you prefer not to use the command line, you can use the built-in Error Checking tool : chkdsk - Microsoft Learn : Press the Windows Key , type cmd