CMD · Storage

Scan a Windows volume without restarting

Runs an online filesystem scan of drive C without immediately scheduling an offline repair.

Low riskAdministrator rights may be required

Command

chkdsk C: /scan

When to use it

Use this for file errors, NTFS warnings, or suspected logical filesystem corruption.

How it works

The /scan option performs an online scan on recent Windows versions.
The result indicates whether additional repair is required.

Precautions

This test does not replace SMART hardware diagnostics for a suspect disk.
Back up important data if errors are detected.

Rollback

The scan alone normally does not modify data.

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