An information processing device that inputs and outputs data into and from a storage device having a plurality of regions, and includes a processor that: changes a first counter value corresponding to a first region serving as a writing target and being retained in a retainer retaining multiple counter values one representing the number of times of data writing into each of the regions; obtains the first counter value from the retainer; generates block data by attaching the first counter value to data to be written into the first region; writes the block data into the first region; when the first counter value satisfies a predetermined condition, reads the block data from the first region after the writing, and compares the read block data with the block data written into the first region, and when the read block data does not match the written block data, notifies an error.