Multifunction device, reboot method, and non-transitory recording medium storing computer readable program

A multifunction device integrally comprising:

• a first device;
• and
• a second device, wherein
• the first device has a first system, and the second system has a second system separately from the first system,
• the second device comprises a second transmitter that requests, in response to a predetermined command, a first snapshot of the first device from the first device,
• the first device comprises:
• a first computing unit that generates the first snapshot in response to a request from the second device;
• and
• a first transmitter that sends the first snapshot generated by the first computing unit to the second device,
• the second device further comprises:
• a second computing unit that generates a second snapshot of the second device in response to the predetermined command;
• and
• a save processing portion that saves, to a save destination, the first snapshot sent from the first device and the second snapshot generated by the second computing unit,
• the first device further comprises a first boot loader that starts the first system by using the first snapshot saved in the save destination, and
• the second device further comprises a second boot loader that starts the second system by using the second snapshot saved in the save destination.