US Patent 7992060 Apparatus, methods, and system of NAND defect management

Various embodiments comprise apparatus, methods, and systems including method comprising searching for a group address among a plurality of group addresses in a mapping table, and if a match is found, performing a memory operation on a first plurality of memory blocks indicated by the mapping table, and if a match is not found, performing a memory operation on a second plurality of memory blocks, the second plurality of memory blocks having the group address.