Name
Windows File Checker —
\windows\system32\sfc.exe
Synopsis
Verify the existence and integrity of some Windows files.
To Open
Command Prompt →
sfc
Usage
sfc [/scannow] [/scanonce] [/scanboot] [/revert] [/purgecache] [/cachesize=x]
Description
Windows File Checker scans your system for corrupt, changed, or missing files, as long as those files are specified in a predetermined list of important system files. By default, Windows File Checker automatically scans your system every time Windows is started. Use the Windows File Checker utility to perform a manual scan or change the automatic settings. The Windows File Checker takes the following options:
-
/scannow Performs an immediate scan of all protected system files.
-
/scanonce Instructs Windows to scan all protected system files the next time Windows is started.
-
/scanboot Instructs Windows to scan all protected system files every time Windows is started.
-
/revert Returns Windows File Checker settings to their defaults.
-
/purgecache Purges the file cache; essentially empties a folder on your hard disk devoted to storing backup copies of protected system files.
-
/cachesize=x Sets the amount of hard disk space to allocate to the file cache folder.
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