Big difference between 1 tb drives
I'm just curious as to why there is a big difference between my 1tb startup disk and my 1tb backup drive.
The backup drive was originally used for photos and videos until it got pretty full. I used Disk Utility to format the drive before using the previous version of SuperDuper! to clone my startup disk over to it. There was a difference between the two after that initial clone but, not as much there is now.
I have since updated SD! to the latest version on my Mac mini running OS X 10.8.5 and when I ran it last night using the SmartUpdate feature I seen that there was a difference of about 10 GB between the drives after it was done.
Any ideas on why the big difference between the two drives?
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