To provide a copy device for copying not only a data folder but also a control program in a portable storage medium such as a USB memory or an SD memory.

The copy device can be mounted with a portable storage medium such as a USB memory or an SD memory, and includes: a reading means for reading a data file and a control program from a first portable storage medium; and a processing means for making a second portable storage medium store the data file and control program read by the reading means. This copy method is configured to perform processing for reading the data file and control program from the first portable storage medium and processing for making the second portable storage medium store the read data file and control program.