From PC-BSD Wiki
- The encryption option has been removed from the installer and has been replaced by a "Encrypt user files" checkbox in the post-installation Create a User Screen for the primary login account and in the User Manager utility for creating additional user accounts. If you choose to use PEFS, it is very important to select a good password that you will not forget. At this time, the password cannot be easily changed as it is associated with the encryption key. A future version of PC-BSD® will provide a utility for managing encryption keys. In the mean time, this forum post provides a work around if you need to change a password of a user that is using PEFS.