I'm installing elementary OS for the first time. I'm using a MacBook 2008 unibody which had El Capitan as the OS. Installation was proceeding satisfactorily until I got this message: "Please unlock disk sda3_crypt" What does this mean and how do I deal with it?

1 Answer 1


The question was solved by the original poster. I'm moving that content to an answer, to properly match the Q&A model:

I've got it sorted. I just had to use the security password I entered on setup.

  • @Paul, please set this answer as accepted (or write another one, if you prefer the self-answer method), so that the system can mark this question as solved.
    – waldyrious
    May 15, 2018 at 20:52

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