What are some of the differences between different types of operating systems, and why are those differences so darn important? lynda.com message: Sign up for your 10-day FREE trial at http://lynda.com/techquickie Twitter: http://twitter.com/linustech Facebook: http://facebook.com/linustech Join our community forum: http://linustechtips.com/ Image credits “Virtual memory” by Ehamberg - Own work. Licensed under CC BY-SA 3.0 via Wikimedia Commons http://commons.wikimedia.org/wiki/File:Virtual_memory.svg#/media/File:Virtual_memory.svg