Question / Problem
When I scan my C: drive, I get 1289Mb [files] at disk root. But when I explore c:\, I only see few files and explorer say 38.5KB. And 1,2GB are really used. Where are theses files ?
Answer / Solution
Most likely your Explorer Options are set to show hidden and system files. You can however see these files on the "Details" tab of TreeSize. You will probably find a very large file named "Pagefile.sys" there which is the swap file of Windows.