Now that File Vault 2 can encrypt the entire disk and encrypt external drives, can I have a fully encrypted Time Machine volume?

2 Answers 2


According to the Lion features page, encrypted backups are supported.

  • 2
    Use the Time Machine pane of System Preferences to enable encryption for the volume. Aug 4, 2011 at 13:26

Daniel Jalkut's blog today has a post that may be what you're looking for.


Apparently, this:

% diskutil cs convert /Volumes/Data -passphrase [yourPasswordHere]

I haven't tried this yet, I just got Lion installed about an hour ago. Any destruction of your system is on your own head.

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