Windows 8.1

When I look at the properties of drive c: it shows that it is a 1.7 terabyte drive and 1.5 terabyte is in use.  I have manually looked at the properties of every folder off of the root of C: and when I add up the sizes I get 73 gigabytes.  I have turned on the hidden files option for all folders so I am looking at all folders to my knowledge.  Where could the other unaccounted for 1.424 terabytes be located??
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Scott CSenior EngineerCommented:
Run this on your drive.

WinDirStat will show you what is used and where it is.
JohnBusiness Consultant (Owner)Commented:
I find Tree Size Pro (Jam Software) to be excellent. Make sure Hidden files are enabled. The only way I could imagine a workstation using this kind of space is excessive use of complete backups.

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Seth SimmonsSr. Systems AdministratorCommented:
what does vssadmin list shadowstorage (from elevated command prompt) show?
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captjcretAuthor Commented:
If there are excessive complete backups where in Windows 8 to you go to remove them? I will also try the other recommendations.
JohnBusiness Consultant (Owner)Commented:
Use Tree Size with Hidden Files enabled and it will show you where any backups are.
Once more, whenever this question arises, nobody mentions to use the tools explicitely elevated ("rightclick - run as aministrator"). Does treesize auto-elevate? I don't think so.
In elevated mode, it will be able to count all files, even those only the administrator may access (and that could be a lot). Best would be to start it as system account, because even the admin cannot read anything.

Download psexec and start treesize with it like this from an elevated command prompt:

psexec -s -i treesize.exe
JohnBusiness Consultant (Owner)Commented:
Does treesize auto-elevate? I don't think so  <-- Tree Size includes a Tree Size (Administrator) shortcut which works and use it.

@captjcret - I should have mentioned this. When you install Tree Size, there is a normal shortcut and an admin shortcut. I use the Admin shortcut and make sure Hidden Files are shown. Then everything is shown. I have used Tree Size this way for a long time.
captjcretAuthor Commented:
Treesize is a nice program and its free.  Norton 360 backup made a directory of backups off of the root of C that were hidden.  The backups were huge because it was not only backing up the local drive but the external drive of files. Treesize showed 13.1 Terabytes in the folder.  I had to modify the permissions because even as the administrator it would not let me delete the folder and its contents.  Once I did I was able to delete the folder and free up 13.1 Terabytes.  Thanks
JohnBusiness Consultant (Owner)Commented:
@captjcret - Thanks for the update and I was happy to help.
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Windows 8

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