A 60 GB drive is usually 60 BILLION BYTES so try converting that to BINARY GIGABYTES and you discover there is no loss. Widely discussed so my answers are rarely as good as the better answers.
Bob
One of the hard disk of my PC of 60 GB showing total size 58.5 GB and the free space 13.1 GB.But when explored by the disk explorer of AVC-3 it shows that the occupied space is not more than 37 GB under any circumstance.Now my question is why is this difference? Where this 9GB is being used?How this pseudo used space can be identified and how it can be recovered?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic