I have a Powerbook with a 60gb hard drive, formatted capacity 55.77gb. I have an external firewire drive of 200gb, partitioned into 55.77gb and whatever is left over. Once a week I clone (using carbon copy cloner) my powerbook's drive onto the external drive's equivalent sized partition. It boots, and it has everything I put on it with no exceptions. The weird thing is that on my powerbooks hard drive, depending on the day, I have 5-10 gb of free space, but the clone drive always has 25gb of free space. Weird huh? Any ideas? Is this a mistake on the part of the drive or the computer, or is my powerbook's drive missing 20gb that I could somehow reclaim?