I am running a server with Windows 2008 Web Server 32 bit. The system drive (C:) is 40GB and is reported as having 6GB free, which should leave 34GB in use.
The size of all files reported in Explorer (highlighting all files and folders and then using Properties) and also by a utility called TreeSize Free is only 16.9GB, leaving 17GB unaccounted for.
Folder view options are set to display hidden files and system protected 'super hidden' files. The recycle bin is also empty
The usual culprit is System Volume Information folder but Shadow Copies is disabled on all drives and the SVI folder is empty (I have grabbed ownership of this to access the folder and there is one empty folder inside it called WindowsImageBackup).
Are there any other system folders like SVI that may appear empty because only the SYSTEM user has access, or can anyone think of another reason why this phantom disk space use may be happening.