I've read your posts and I'm more than happy with having a safe back-up, but I've just bought a second hand macbook for the missus and I want to activate find my mac and its grey and dead and out of reach!
She's all updated to mountain lion, which I thought had recovery HD built in, but the text under the find my mac section in the icloud account says :Recovery HD required" !!! What do I do?
All help appreciated, and don't condescend me, I'm precious ;p