TODO:
 - add 'conv=noerror,sync' for dd error recovery, per
   http://slashdot.org/comments.pl?sid=44030&cid=4586016
   XXX needs dd compiled w/o SMALLPROG!
 - disable password-echo on entry:
   echo password: \\c ; stty -echo ; read pw ; stty echo
 - cd/dvd restore facility
 - Doc: List of operating systems cloned successfully

Long-Term:
 - Multicast transfers - http://udpcast.linux.lu/ ?
 - read options from DHCP
