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Purge XP's File Protection Cache

To delete the DLL cache used by Windows file protection, the following command can be used (start > run):

sfc /purgecache

This is useful for effectively disabling file protection (Windows will try to use the XP Install CD if it is in the drive) and also freeing up some space (around 500mb), as the cache makes up a fairly large part of the default XP install.

As a side note: If worst comes to worst, WFP will just ask you to put the Windows XP CD in, so the cache is really only for when Windows wants to be sneaky about replacing files.

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Tags: Windows XP