my: C drive shows 130 used and 10 GB free but I can only represent 65GB when I total up to folders in the: hard drive C. Why is this?

I have a laptop Lenovo T61 with 140 GB hard drive using Windows Vista Ultimate Edition

Certain files and folders are hidden.  To see them, go to start / Control Panel / folder Options / View and uncheck to hide system files, and check the box to show the hidden files and folders.  Which may help explain the difference.

In addition, Vista does not have a very good job of reporting used disk space.  It is a common problem with no real solution under Vista.  Certain files and folders are simply not included (for some reason any) in the summary or remain hidden despite the changes described above.  I believe that this applies to system restore and shadow copy information and probably others as well the files/folders.  You can change the maximum space used by these programs that can clear up some space (with the compromise that you have less restore points).  Here's how: http://www.vistax64.com/tutorials/76227-system-restore-disk-space.html.

I recommend http://www.hdgraph.com/ to scan your system for how the space is used.  It is not perfect either, but it is a bit more accurate and provides more data and information in a way that makes it easier to read and understand the structures.  I don't know if it fills up space system restore and shadow copies, but it could (and is probably worth a try just to see what it shows).

I hope this helps.

Good luck!

Lorien - MCSA/MCSE/network + / has + - if this post solves your problem, please click the 'Mark as answer' or 'Useful' button at the top of this message. Marking a post as answer, or relatively useful, you help others find the answer more quickly.

Tags: Windows

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