Chkdsk On External Drive Jun 2026

Open File Explorer and go to This PC . Look for your external drive and note its letter (e.g., E: , F: , or G: ). Open Command Prompt as Admin: Click the Start button, type cmd . Right-click Command Prompt and select Run as Administrator .

Windows chkdsk (Check Disk) Use Case: Diagnosing and repairing a failing or corrupt external drive. chkdsk on external drive

is the Swiss Army Knife of Windows storage management. It is ugly, unintuitive for beginners, and slow, but it is undeniably effective. It has saved me from data loss more times than I can count, and every Windows user should know how to use the basic commands. Open File Explorer and go to This PC

Essential utility, but handle with care. Right-click Command Prompt and select Run as Administrator

| Error | Likely Cause | Fix | |-------|--------------|-----| | “CHKDSK cannot run because volume is in use” | Another program using the drive | Close all files, run chkdsk E: /f /x | | “The type of file system is RAW” | Corrupt partition or unformatted drive | Don’t run CHKDSK; try data recovery first | | “Access denied” | Not admin | Run CMD as Administrator | | Drive disconnects mid-scan | Bad USB cable/port or failing drive | Try another cable/port; if persists, drive is failing | | CHKDSK stuck at 10% for hours | Drive has many bad sectors | Let it run (up to 48h) or cancel (Ctrl+C) if no progress |