Chromebooks have nailed the, "Oh, by the way, hold down this magic key combo, and it's yours. It's your laptop now. We will put up a crazy warning screen, but then we'll boot to whatever you want to boot to."

  The deep dark secret that nobody knows about Chromebooks, and I've been trying to give talks about this for years, but people still don't know it, is you can further take that Chromebook, re-key it with your personal key, and build an operating system image which you sign with your personal key, and that Chromebook from then on will only boot your version of your operating system that you load. It won't even recognize Google's operating system as legitimate .. [but] .. there is no way back when you blow those Google keys out of your Chromebook. You're running your version of Chrome OS or whatever forever