Accessing the FileVault 2 Reset Password wizard via Yosemite’s Recovery HD
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.
Der Flounder 
Installed Yosemite in a flash drive to test it out. Created account without apple I’d and created basic password.
Good thing it was just on the flash drive, unable to log in because password was wrong.
Used this to change password. Seemed to have worked.
Will try to log on as soon as the computer boots up. Slow booting from flash drives.
This doesn’t work. I’m booted into the Yosemite Recovery partition with Terminal open. Typing filevaultrecovery results in “command not found”. What am I missing?