I bought a new MacBook the other week and moved my data across from my MBA. FileVault enabled, all fine. What I don't know is if my Recovery Key, created on my previous machine, also applies to the new MB. I can't remember if the Key is associated with an Apple login, or with a particular machine (i.e. did I create it as part of setting up FileVault on my old machine?). What I do know is that when I set up the new MB at no point did I get asked to set up a new Recovery Key. Someone want to educate me?