So I reinstalled Windows 7 x64, got everything I want installed to this point, and did a backup. I used Acronis True Image, my dad gave it to me, and said it works good, but the image that it made is only 5.7GB, and the install on the drive I backed up is using 28GB of space, but is reported as 19.3GB if I open C:\ and select > right click > Properties. What's the dealio y0?