If I activate the FileVault HDD/SSD encryption feature on OS X after I installed OS X I'm forced to use a 'Recovery-Key' (predetermined breaking point for NSA etc?). When formatting the entire HDD/SSD before installing OS X with the Journaled/Encrypted option there is no 'Recovery-Key' set.
Or is it and OS X doesn't tell you? Is there any option to encrypt the whole drive with FileVault after installation without the need for a 'Recovery-Key' which makes the whole encryption nearly useless (especially if you save your 'Recovery-Key' in your iCloud)?