Patent ID: 6823422
Filing Date: 2004-11-23
Classification: G06F,G11B

Abstract:
A semiconductor memory card comprising:a memory area having a data structure including: a plurality of sectors wherein data in each group of 2j sectors (j being 0 or a positive integer) is managed as a cluster, one or more clusters is managed as a file, each group of 2i consecutive sectors in the memory area form a block (i being 0 or a positive integer), and a block is a smallest unit on which data erasure can be performed; a first area comprising: a first block including a first sector having a master boot record and a partition table recorded therein; a predetermined number of skipped sectors; and at least one block different from the first block including subsequent sectors having partition boot sector information, a file allocation table, and a root directory entry recorded therein such that an end of the root directory entry aligns with an end of the first area; a second area having user data recorded therein; and a backup area having attribute information of the file recorded therein.