Abstract: A storage device according to an aspect of the present invention comprises a plurality of memory devices and a storage controller. The memory devices provide the storage controller with a storage space which comprises a plurality of sectors, each said sector including a write data memory region and an inspection code memory region. When the memory devices receive a read request from the storage controller, if the sector which is the subject of the read request has not been written to, an inspection code is generated on the basis of information included in the read request, and data of a prescribed pattern is transmitted with the inspection code to the storage controller.