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How can I determine the size of my registry?

I'm trying to backup my registry, and its taking a long time.

I din't think there was a file path I could go to to check its' properties like any other file? How can I determine its size?

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up vote 8 down vote accepted

%windir%\System32\config and %USERPROFILE%\NTUSER.DAT. The config folder will be hidden, but contains all the registry hives, EXCEPT for the HKEY_CURRENT_USER, which is the NTUSER.DAT file

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Note that the file size is not necessarily the same as the registry size. As with many other binary database formats, it's possible that part of the file was used in the past but not anymore (similar to how file systems get fragmented). – grawity Jan 3 '12 at 23:42
@grawity That's true, but totally forgotten – Canadian Luke Jan 3 '12 at 23:43
@grawity: Now you are just getting plain picky. – surfasb Jan 4 '12 at 0:40
@surfasb But to attract the "experts", you need to be :P – Canadian Luke Jan 4 '12 at 0:46
@surfasb: My profile page says "picky asshole". – grawity Jan 4 '12 at 0:59

There's also the dureg utility:


The download in the above description is wrong, but you can google dureg and find the executable. For example:

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