Sfc

Sfc

Scans protected files system and verifies their integrity.

Syntax

 Sfc [/scannow] [/scanonce] [/scanboot] [/revert] [purgecache] [/cachesize=x] 

Parameters
Parameter	Purpose
[/scannow]	Performs an immediate scan of all protected file systems.
[/scanonce]	Scans all protected file systems one time.
[/scanboot]	Scans all protected file systems every time the computer is started.
[/revert]	Restores the scan to its default settings.
[purgecache]	Clears out Windows File Protection cache and performs an immediate scan.
[/cachesize=x]	Sets a maximum cache size in MB for Windows File Protection cache.