You no longer need the solutions above.

Prerequisites:

• an Ubuntu 14.04 LTS install


• an encrypted home directory (see https://help.ubuntu.com/community/EncryptedHome)


• a desire to automatically mount a secondary encrypted drive [edit] when you log in.

Note: this method is less secure than mounting an encrypted drive manually. If someone has physical access to your computer, you are careless with your root password, or your computer has multiple users/guest accounts, this method is not secure; the secondary drive stays mounted when you log out but do not shut down the system, so its contents are visible to other users.

Part 1: Encrypt the secondary drive.

1. In the Unity dash type "disks" and hit enter.


2. Below "Devices" click on the hard drive you want to encrypt.


3. Below "Volumes" click on the cog/more actions button.


4. Click "Format Volume". For type, choose "Encrypted, compatible with Linux systems." Name your drive and give it a strong pass phrase.


5. Click "Format"

Part 2: Automatically mount the HDD on system start-up.

1. Keep the "Disks" application open, and click on the cog.


2. Click "Edit Encryption Options."


3. "Automatic Encryption Options" will be turned on, and the menu below greyed out. Turn automatic encryption options off.


4. Enter the pass phrase from when you formatted the disk. Click "Ok".

You now have an encrypted hard drive that will automatically mount when your computer boots.