if '#1' != '' goto check_arg
  echo -e No device specified
  exit

%check_arg
  if #1 = fda goto begin
  if #1 = fdb goto begin
  if #1 = fdc goto begin
  if #1 = fdd goto begin
  if #1 = sfda goto begin
  if #1 = sfdb goto begin
  if #1 = sfdc goto begin
  if #1 = sfdd goto begin
  if #1 = hd0 goto begin
  if #1 = hd1 goto begin
  if #1 = hd2 goto begin

%arg_err
  echo -e Illegal argument: '"#1"'
  exit

%begin
  d /
  echo -n Now updating disk #1 ...
  mode -pause
  create /drive
  mount #1 /drive
  wboot #1

%updatefiles
  cptree -f /bin /drive/bin
  cptree -f /cmd /drive/cmd
  copy -f /cromix.sys /drive
  cptree -f /dev /drive/dev
  cptree -f /equ /drive/equ

  d /drive/etc
  move -f motd motd.old >* /dev/null
  move -f startup.msg startup.msg.old >* /dev/null
  d /etc
  copy -f fdboot hdboot ioload.bin iostartup.iop.cmd login.bin motd drive/etc
  copy -f octart.iop oct_reset.bin quadart.iop sfdboot /drive/etc
  copy -f startup.msg ttys.iop /drive/etc

  d /
  makd /drive/gen >* /dev/null
  cptree -f /gen /drive/gen
  cptree -f /usr /drive/usr

  d /drive
  chowner bin bin cmd dev equ etc gen usr
  access rewa.e.e etc

%update complete
  d /
  unmount #1
  del /drive
  mode pause
  echo
  echo Finished updating disk #1
  echo
  echo "**** Now reset the computer and boot onto your root device ****"
  kill -2 1