installers after a complete backup of all LUKS containers has been
made.
+ NO WARNING ON NON-INERACTIVE FORMAT: If you feed cryptsetup from
+ STDIN (e.g. via GPG) on LUKS format, it does not give you the
+ warning that you are about to format (and e.g. will lose any
+ pre-existing LUKS container on the target), as it assumes it is
+ used form a script. In this scenario, the responsibility for
+ warning the user and possibly checking for an existing LUKS header
+ goes over to the script. This is a more general form of the
+ previous item.
+
LUKS PASSPHRASE IS NOT THE MASTER KEY: The LUKS passphrase is not
used in deriving the master key. It is used in decrypting a master
key that is randomly selected on header creation. This means that