> try it out on a BeagleBone Black and tinker around a bit with it

I've seen statements to this effect around, and it's kept me puzzled. Why ditch a VM that runs on your main dev computer, and instead opt for a BeageBone, rPI, etc.? With a separate computer (like a BeagleBone), you have to copy over the OS ri it each time after building it, and this takes up a small amount of additional effort and time (that could add up). Aren't VMs are faster for someone who wants to do a lot of tinkering and iterative OS development?