US Patent 7219261 Information processing apparatus and method

An information processing apparatus capable of running properly, with automatically executing a backup OS program or a default OS program, from an automatic judgment in a case that a current OS program does not run properly, in which a state flag is disposed in a flash ROM in order to indicate whether or not the current OS program runs properly at the previous time, and a state of the state flag is checked when the current OS program is executed, the current OS program is executed in the case that the current OS program runs properly at the previous time, and the backup OS program is executed in the case that the current OS program does not run properly at the previous time.