The other day I was going to transfer a ten episode tv show serie, each Movie file was about 300mb. But then I noticed i didnt have enough Space, so I started to look into it, and deleted about everything. And now i have 300mb in files and my apps are using about 3gb. And for some reason I still just got 12gb free Space. What about the rest of the harddrive? I know that the OS are using some of it, but seriously, the os doesnt use 20gb?!