
In real life:
1000 bytes = 1 kilobyte
But in most software they bastardized the unit into:
1024 bytes = 1 KB (so not really 'kilo')
Its confusing, but they are like centimeters and inches, only the difference is not as big.
EDIT:
937 gigabytes = 1 006 096 089 088 bytes (Over 1TB in standard unit)
931 gigabytes = 999 653 638 144 bytes (Just a bit less, this is because every harddrive needs to have a index, much like a book. Those take 'pages')
thanks for clarifying
thanks to all those U2 audio and video bootlegs totally loading my other 3 harddrives to the limit.... anyway, got the new HD formatted and all, it works fine.
I want the rest!

