Whent he sell harddrives, the sell them by 1gb=1,000mb and 1mb=1,00kb, etc... when really 1gb=1,024mb and 1mb=1,024kb. quick explanation is that all computers work in 2's and 2^10=1024. so really when you bought a 60 gb hard drive, you were only really buying a 60,000,000,000 byte hard drive...