A media processing device has a media drive for writing data on one side of recording media, a label printer for printing on the other side of the media M, media stackers for storing the media, and a transportation arm for transporting the media to any of the media drive, the label printer, and the media stackers according to control commands sent from a host computer. The control method for the media processing device has an execution step of starting executing a plurality of control commands based on a start process command; a decision step of determining if all of the control commands executed normally; and a transmission step of sending a normal termination report to the host computer as the response to the end process command that is sent as a set with the start process command if step determines that all control commands executed normally.