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I have a 5TB hard drive (4.54TB in reality). Properties tells me I've used 4.45TB. It includes one system backup of roughly 1.8TB.
I decided to move everything (except system files, recycle bin, and that backup) to a new drive. Windows 7 tells me I'm moving 587GB. I've set all hidden and system files to be visible.
How is that one backup plus the rest of the files -- which together are about 2.5TB -- somehow amount to 4.45TB? What am I missing here?