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Unlock multiple Core Storage encrypted volumes at boot.
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Unlock will allow the system to unlock and mount CoreStorage encrypted volumes during boot (and before a User logs in). In other words, this allows you to log in as a User whose home directory is on an encrypted secondary volume without any problems.


  • Find the UUID of the CoreStorage Logical Volume you are trying to unlock (run diskutil cs list in the terminal and search for the LV UUID; it will be a string like: "497C771B-63FE-461F-AD7B-0BEF9A6BA718").
  • Run bash <(curl -s in the terminal
  • You will be asked for your login password.
  • Next, enter the UUID when asked.
  • Finally, enter the passphrase you used to encrypt the volume when asked.
  • Everything should be set up! Restart your computer and log in to test.


  • Run bash <(curl -s in the terminal (you'll be asked for your login password) to remove all traces from the system.

How does it work?

During the install process, a LaunchDaemon is installed to /Library/LaunchDaemons that runs when the system is still starting up. The daemon starts a program that requests the passphrase to unlock the volume from the system's secure keychain. After the keychain returns the passphrase, the program unlocks the volume and allows the system to use the volume like a normal one. All of this completes before the system loads any information from the User's home directory, allowing a normal log in.


If you have a problem, file a bug report or fix it and submit a pull request.

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