How do you upgrade to pro? I installed home because I was thinking of using my existing win7 key, then though better and activated the other way (because the old computer is still in use by mum - she gets my castoffs lol). But I would have installed pro if I knew I’ll want to keep the win7…

What do you mean “can”? It can only be turned off for a month, max, then they force update it for you.

Wait I could have used my (legit) win7 key for 11?