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.