File or Directory Is Corrupted and Unreadable — Fix

What Does This Error Mean?

Run CHKDSK on the affected drive: open Command Prompt as Admin and type chkdsk X: /f /r (replace X with your drive letter) — this repairs file system errors. If the error is on a USB or external drive, try it in a different USB port first — a bad connection can cause this error without actual corruption. Back up any accessible files immediately before running CHKDSK.

Affected Models

Windows 11
Windows 10
Windows 8.1
Windows 7

Common Causes

File system errors on the drive caused by an improper shutdown or power cut
Bad sectors on a hard drive or failing SSD
USB drive not safely ejected, leaving the file system in an inconsistent state
Drive letter assigned to an unformatted or RAW partition
Physical damage to the storage device

How to Fix It

Try a different USB port or cable

For USB drives and external drives, plug into a different USB port. A loose connection or a faulty USB hub can produce the corrupted error without any real data corruption.
Run CHKDSK

Open Command Prompt as Administrator. Type: chkdsk X: /f /r — replace X with the drive letter (e.g. D: for an external drive). The /f flag fixes errors, /r locates bad sectors. For the C: drive, you will be prompted to schedule it on next restart.
Run CHKDSK from Windows Recovery

If CHKDSK cannot run on C: in Windows, boot from a Windows USB → Troubleshoot → Advanced Options → Command Prompt → run chkdsk C: /f /r. This repairs the system drive without Windows interfering.
Assign or fix a drive letter

If the drive shows as RAW or has no drive letter: right-click Start → Disk Management → right-click the volume → Change Drive Letter and Paths → add a letter. Or right-click → Format — WARNING: formatting deletes all data.
Use data recovery software first

If you need the files, run Recuva or TestDisk (both free) to recover data before running CHKDSK or formatting. CHKDSK may delete corrupted files during repair.

When to Call a Professional

If CHKDSK reports bad sectors and cannot repair them, the drive is physically failing. Stop using it immediately, back up what you can, and replace it. Do not attempt to continue using a drive with bad sectors.

Frequently Asked Questions

CHKDSK found errors but says it cannot fix them — what now?

Unfixable errors usually mean the drive has physical bad sectors. Stop using the drive, copy all accessible files to another drive immediately, and replace the failing drive.

File or directory corrupted on a USB drive — is the drive dead?

Not necessarily — USB drives are prone to file system errors from being unplugged without safely ejecting. Run chkdsk X: /f /r on the USB drive. If it fixes the errors, the drive is fine.

Corrupted file error on my C: drive — is Windows at risk?

CHKDSK will repair file system errors on C: on the next restart. If CHKDSK reports many bad sectors on C:, your system drive is failing — back up your files and replace it before Windows fails to boot.