I have a Windows server 2008 R2 OS.
The data drive (E:) is partitioned into a 500GB hard drive (RAID1).
If you right click on the drive and look at the properties it shows 458GB used and 30GB free.
However, if you select all files and folders (yes, even hidden and system files) it only reports about 200GB used.
Ran chkdsk, scandisk, etc. but did not help.
I ran 2 different hard drive utilities to find the hidden files: Windirstat and Foldersize.
Both of these program report that only 200GB is being used.
I have included screenshots in this attachment
This is driving me crazy.