Registration mechanism and spare area for defect management and information management of defect.And the process of allocating spare area and process to manage defects.

摘要

Registration mechanism and spare area for defect management and information management of defect.And the process of allocating spare area and process for managing defects are provided a registration mechanism featuring a spare area for defect management and informau00e7u00e3The management of spare area, a spare area allocation process, and a process of management of defect.When a primary spare area allocated for linear replacement replacement by sliding and upon startup,And a spare area allocated for linear replacement after the initialization are insufficient, a supplementary spare area allocates itself.The sizes of spare areas and additional primary are determined by the number of defects generated by the initialization.The information about the sizes of spare areas, and the remaining status information representing the degree of use of spare areas, are recorded,So that the spare areas can be efficiently managed.Still, in the process of management of defect, when an area that has already been linearly answer is allocated as supplementary spare area.The defective blocks within the supplementary spare area are not used for linear replacement.And the entries of a secondary defect list (SDL) with respect to the bad blocks are not changed.