While ago I setup FDE on a new drive, put the passphrase in my encrypted password file, put the new copy of the password file on the encrypted drive, and then proceeded to wipe machine that had the only other copy of that password file (well at least the up-to-date version with that passphrase). A nasty surprise indeed. Thankfully I only lost a month's worth of files (mostly photos).
Heh. In the spirit of it being my turn to ' … belatedly reveal the time … " I mentioned upthread…
One time I had my carefully encrypted secrets thoughtfully spread across my laptop drive, my iPod as backup #1, and an external hard drive as backup #2. All of which I had in my backpack one night - which I proceeded to leave at a restaurant where I'd been sitting outside on the sidewalk tables, and I didn't notice until _way_ after they'd closed for the night. (I used up a _great_ deal of luck that night - we went to that restaurant enough to be "regulars", and the waitstaff found it and knew it was one of ours, and it was waiting for me when they opened the next day...)