Realtime disk encryption options

[Thomas Charron]

  Has anyone ever tried to do full disk encryption?

  I've been looking at the options, and TrueCrypt,
http://www.truecrypt.org/ seems to best solution I've seen.  It can
actually maintain deniability by encrypting data in such a way that
giving one pasword decrypts to one filesystem, and different password
another, encrypting the data front to back for the 'right'
credentials, and back to front for the fake one.

  This way if anyone ever does 'put a gun to your head' in court, etc,
you can give them the backup password, and there is no real way of
telling if it's the correct one.

  But I digress, just seemed 'cool'.  Anyone ever looked at or use
these encrypted block device solutions?

-- 
-- Thomas