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I ran a chkdsk and it stated it was correcting the upercase file. Out of complete curiosity I Googled it but couldn't find any info. Anyone know what this file is?

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up vote 4 down vote accepted

It stores a mapping between lower-case letters and upper-case letters (so as to provide case-insensitivity). Details here:

And this one may apply more specifically to you:, and links to this MSKB article: Error message when you run Chkdsk.exe on a Windows XP-based or on a Windows Server 2003-based computer: “Correcting errors in the uppercase file”

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Perfect :) I figured it was something like that, but it's nice to quench my curiosity. – Jeff F. Mar 21 '11 at 17:45

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