Step 1.
Step 2.
Step 3. hey replace * with the exact drive letter of the external hard drive or USB drive.
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Wonder using CHKDSK /f or /r to check & fix hard disk errors?
Check difference between CHKDSK /f and CHKDSK /r.
Learn how to run CHKDSK /f /r Windows 10.

MiniTool Power Data Recoveryis a free data recovery program compatible with Windows 10/8/7.
Windows PC and laptop, external hard drive, USB flash/pen/thumb drive, SD card, etc.
Connect the external hard drive or USB with your Windows 10 computer.
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Double-click MiniTool Power Data Recovery icon to launch it.
you could click Hard Disk Drive if you make a run at recover data from external hard drive.
Rightly clickScanbutton, and MiniTool Power Data Recovery will start scanning the chosen drive.

Wait until the scan process finishes.
Then you’re able to check the scan result to find your deleted or lost files.
Check needed files and clickSavebutton to choose a new place to save them.
Verdict
This is the guide for how to run CHKDSK on external hard drive Windows 10.
An easy and free data recovery method is also available for your choice.