To restore the master key file from the CD, you will need to insert the CD in the CD ROM drive and copy the master key file (cryptoDaemonMasterKeys) to /var/lib/misc. At this point only backups up to the time that the CD was created can be restored. Note, the current passphrase is NOT stored on the off-premise system or the archive drives. You are required to enter the current passphrase in the administrators interface to unlock the keys.