Filevault 2 does not start with encryption
Trying to encrypt my 2011 MacBook Pro SSD with FileVault 2 (Mountain Lion), I get the message: FileVault failed - start up file was not written (FileVault fehlgeschlagen - Startdatei wurde nicht geschrieben)?! - Checking and fixing rights and volume did not help, also not a new installation of Mountain Lion. Always same procedure: After I get the unlock key, I click to new start and after a few seconds the message appears and FileVault 2 ends. - Does someone know, what to do? Thanks for any help!
MacBook Pro, OS X Mountain Lion, filevault 2