Anyone know why my c drive properties should say 30Gb full when totalling up individual folders and files in the c drive window (including hidden files) only comes up to about 20Gb? I have a 60Gb HDD and am trying to back it up onto a partition on the same drive using Powerquest Image Drive's setup wizard. It keeps coming up with a disc error message saying that the disc is full. This occurs during the builing of an image file, long after after a partition had been automatically made. Thanks in advance to any answers.