reven: What if I format my computer after the 12 months is up, do I still have the free upgrade? i.e. can I reinstall windows 10 then?
It sounds like how windows 8 worked if you had a new PC that had windows 7 (with free upgrade to 8)
So once it goes live you will get a reg code tied to the machine you are upgrading and you save the code somewhere in case you have to reload windows.
One day I hope it's just tied to the MS account so as soon as you login with the MS account it knows that you have a code to use windows.


