I’m using Whonix on KVM with a Linux host OS to securely develop applications. I’d like to full disk encrypt the Workstation VM so a password has to be entered to unlock the data on the VM so if its not running nobody can view the data. I do have my home folder in host OS ecryptfs home encrypted but that doesnt protect me if I leave the computer running. FDE on VM I’ll be protected as long as VM isnt running with VM disk decrypted.
I used the instructions from the KVM Wiki and have the 2 100 GB .gcow2 files. I get GRUB at start but have no option to log in or full disk encrypt, not even when I first set it up and I changed the passwords. How would I enable full disk encryption? Can I do it still without having to lose all my data or do I need a fresh install?