Hibernation/resume time is reduced, and a low-power information processing device and a method for driving the information processing device are provided. In an information processing device in which a virtual environment is created, in hibernation during which part of a main storage unit is stopped while data in the main storage unit is retained, data stored in the main storage unit is saved to a non-volatile memory, and whether another data shares a common block with the data saved to the non-volatile memory is determined in hibernation during which part of the main storage unit is stopped while the other data in the main storage unit is retained. In the case where there is a common block, the common block of the other data is not saved to the non-volatile memory, and the information on the common block is retained in the non-volatile memory.