Yesterday, I wrote a tip about using FileVault 2 encryption in Mac OS X Lion to encrypt a variety of external devices and SD cards. Although I like FileVault 2, I mentioned that it had some caveats.

Call me paranoid, but I'd like to protect my data in the event of a hard drive failure. I've got an iMac (2011) and it's got a 1 TB HD inside. I'm debating turning ON FileVault. If the hard drive ...