I’d previously written a post about Yosemite’s FileVault 2 pre-boot recovery options and how they can be accessed via the FileVault 2 pre-boot login screen. This process uses a Reset Password wizard to help users recover from login problems at the FileVault 2 pre-boot login screen.
I recently learned that the FileVault 2 Reset Password wizard can also be manually launched while booted from the Recovery partition. For more details, see below the jump.
Accessing the FileVault 2 Reset Password wizard
1. Boot to the Recovery HD partition
2. Open Terminal from the Utilities menu
3. In Terminal, type the following command:
filevaultrecovery
4. FileVault 2’s Reset Password wizard should appear.
For more information about the Reset Password wizard and how it works, please see the link below:
https://derflounder.wordpress.com/2015/01/17/yosemites-filevault-2-pre-boot-recovery-options/
Hat tip: Rhys Thornett in the JAMF Nation forums.