I was using my friend's Macbook Pro while he is away for a week and needed to install some software, so I deleted .AppleSetupDone to create a second administrator account with a different name. I now realize he was using FileVault. I don't know his password but I am very concerned about if this can cause any accessibility problems for his files. His account is still there under System Preferences and I have been using the new account. He knows his login/password so FileVault should unlock fine when he signs in with that, right? If someone here doesn't know I'd also like to know for sure if there another forum where I might be able to get a more definitive answer. This is going to really bother me until I find out for sure. Thanks!