500GB as it is on the package is 500,000,000,000 Bytes. Since a kilobyte is 1024 bytes and a megabyte is 1024 kilobytes and a gigabyte is 1024 megabytes, the calculation doesn’t come out as 500 GBs of space. It’s basically a marketing scheme to make you think you’re getting more space than you are, all hard drives are sold that way. It’s 500 billion bytes and not 500 GBs, even though that’s what it says. 465 GBs of space is all there really is. If you divide 500,000,000,000 by 1024, then by 1024, then by 1024 again, you get the actual space your computer will use, which comes out to 465.66 GB.
I hope this helps!!!