January 2005
Intermediate to advanced
688 pages
25h 59m
English
Content preview from Windows XP in a Nutshell, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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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.
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/scanonce Instructs Windows to scan all protected system files the next time Windows is started.
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/scanboot Instructs Windows to scan all protected system files every time Windows is started.
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/revert Returns Windows File Checker settings to their defaults.
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/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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