STORAGE DEVICE, FLASH MEMORY CONTROL DEVICE, AND PROGRAM

摘要

A storage device is provided with a flash memory (21) in which data is erased in units of a block, and which is provided with a plurality of blocks (31) in which data is written in smaller units than the block, and a control unit (11) for executing a read of the data written in the block and a write of data to the block. The flash memory is provided with at least one block set (37). Write data and a write flag can be written to each block (BRi) that is a constituent of the block set. The control unit executes an erase process (S5) of erasing the write data written in a block BR (ｌ) and data including a write flag, a first write process (S6) of writing new data to the block (BRｌ), and a second write process (S7) of writing a write flag to a block (BRm).