Apparatus and method for managing bad blocks in a flash memory

摘要

A method and an apparatus for managing bad blocks generated while a flash memory (100) is being used. A method for managing a bad block in a flash memory (100) includes (a) allocating a used area (110) having a plurality of used blocks and a spare area (120) having a plurality of spare blocks in the flash memory (100), and providing a block map page group (150) including a plurality of block map pages in which mapping information to map a bad block generated in either of the used area (110) or the spare block to a spare block, (b) having mapping information of the block map page reside in a main memory (400), and (c) mapping the bad block generated during a flash operation to an unused spare block found through the mapping information, updating the mapping information, and recording the updated mapping information on the block map page.