Lion is all setup and running smoothly and I have moved my home folder on to a secondary hard drive (with Lion installed on my SSD boot drive). FileVault works fine for the boot drive, but currently does not encrypt the secondary containing the home directory (which is where most of the sensitive information is stored anyways!). I am trying to encrypt the secondary drive with no success. When I follow the blog entry here: http://www.joshkerr.com/2011/06/using-file-vault-2-with-multiple-drives/ There is no progress in the encryption of the drive. It needs to be unmounted, but to do so you need to log off. However, you can't continue encryption without logging in - which you won't be able to do because the partition is partially encrypted. I also tried erasing the secondary drive as a encrypted partition and copying the home folder over, with all files encrypted on transfer. However, the boot process does not let you mount a encrypted partition and therefore you still can't log in.