You can set up a lock Message under System Preferences => Security & Privacy => General => Set Lock Message.
This Message is stored in NVRAM. Under 10.9 Mavericks it was not only shown on Login/Fast User switch window but also on the FileVault2 Login Screen after a cold boot which makes a whole lot of sense. On 10.11 El Capitan this feature is gone. The Message is only shown on the normal Login/Fast User switch window after the machine has already been unlocked.
Is there a way to revert 10.9 behaviour?

1 Answer 1


I fixed it myself by updating my user picture under System Preferences => Users & Groups after setting the Lock Message. Now it appears again on FileVault2 Screen

  • Awesome! Please mark this as answered
    – JMY1000
    Commented Mar 5, 2016 at 22:54

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