Specifically I was referring to the MD5 checksum. And in all honesty it is beyond my capability to explain it in my own words. So I'll leave it to the experts. The webpage explains the process to check it for all operating systems. A tl;dr, but very instructive. I am bringing the whole subject up because every time I had an issue installing any flavour of Linux this is one of the first things they ask about.HowToMD5SUM
ETA: The number above for the x86 version is wrong. It is f67fb73a00a10e7fb1771c2a272acdb9
Edited by Bezukhov, 13 December 2012 - 10:14 AM.