Server Reporting Wrong Available Space

I have a Windows 2003 SP2 Server.  The c: drive was running low on space 17 gigs available out of 1 TB.  After researching I found that the WSUS database and updates were taking up over half to the space.  So I added disk space to the server (drive E, leaving drive C untouched) and I moved the WSUS content to the new E:.

It now shows that I have 132 Gigs available on the C: drive.  However if I show hidden files and highlight everything on the c: drive and go to properties it says I am only using half a terrabyte.  So I ran DiskData to try and find why I am not seeing more space.  According the DiskData I am only using half a terabyte of space, which is what I expect.  

So my question is, where is my space hiding and how do I get it back.  I ran checkdisk but that did not show any errors.  There are no restore points and shadow copy is disabled.  

I think the File Allocation Table is confused, but I do not know to resolve the problem.  Any help would be appreciated.
commengAsked:
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Seth SimmonsSr. Systems AdministratorCommented:
you can use windirstat (free) to have it go through your drive and identify where the space is being used

http://windirstat.info/
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ZabagaRCommented:
Did you run chkdsk c: /R
That implies /F so it's the same as chkdsk c: /F /R
I usually do the /F and /R
...then it will run on next reboot.
Just wanted to make sure you used the switche(s) from chkdsk
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commengAuthor Commented:
Windirstat stated that I am using 377 Gigs of data, making this even worse.

I did not reboot the serve the ran checkdisk in read only mode to see if any error were present,  I with do the /f /r switch now.
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Seth SimmonsSr. Systems AdministratorCommented:
did it show how much space is used in each folder?  that will show you where the utilization is.  could you attach a screenshot?
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commengAuthor Commented:
Yes, but so did DiskData, but the total space listed is not what it is said is currently used.
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ZabagaRCommented:
I think you'll fix the mistaken calculation with the chkdsk c: /F /R
I'm sure you'll let us know! Can you run that now or do you have to wait for off hours?
That can take 20 mins to run....it can take an hour to run...depends on how many discrepancies it finds.
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commengAuthor Commented:
It has been running for about an hour of course I will let you know if that finds the error.
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commengAuthor Commented:
OK, the chkdsk /f /r finished no error found and the disk space is still missing.  I am rerunning the WinDirStat so I can take a snapshot and post it.
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commengAuthor Commented:
Attached please find an image of the WinDirStat.  You will notice that the total space on the C: drive is registering as 377 Gigs, however from My Computer You will see that out of the Terrabyte, I only have 132 gigs left.

I don't know where the space is but I need to get it back.
diskspace.jpg
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commengAuthor Commented:
Any other ideas on how to find this missing space?
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commengAuthor Commented:
I found it, I found it.  

OK the missing space is sitting in unknown space.  Thank you Seth, I appreciate the suggestion.

Any ideas how I can get this space back?
photo.jpg
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commengAuthor Commented:
I found the missing space, not I just need to figure out how to recover it.
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Windows Server 2003

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