I just got a Chromebook and am trying to learn about it. As far as I can tell it has a very basic operating system. Just enough to turn on and get you connected to the internet. Everything it does is online, in the cloud. Your programs are there and your documents are there. I have not yet figured out how to access the hard drive or directory structure if there is one. There is no start button. It is used for surfing the net and playing games there.