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If you've ever watched a windows computer defrag a drive, you might have noticed that many of the files that are fragmented and need fixed have names like A0833773.DLL. If you know regular expressions, I could express the filename this way:

A\d{7}[.]DLL

Does anyone here know what those files are or what they're used for?

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up vote 2 down vote accepted

They are files Windows uses to perform System Restore functions.

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