Patent ID: 8990487
Filing Date: 2015-03-24
Classification: G06F,G11B

Abstract:
1. A semiconductor memory module that has a memory area comprising of a plurality of sectors, by managing one or more sectors as a cluster, and managing one or more clusters as a file, some consecutive sectors in the memory area forming a block, the block being a smallest unit on which data erasure can be performed, the semiconductor memory module comprising: a first area for recording volume management information, a second area for recording a block including a root directory entry, a third area, being formed from sectors following the first area, for recording user data, and a backup area having attribute information of the file recorded therein, wherein the volume management information including a master boot record, a partition table, partition boot sector information, and a file allocation table that indicates, for each file, links between clusters corresponding to the file, the master boot record and the partition table are recorded in a first sector of a first block in the first area, and the partition boot sector information, the file allocation table, and a predetermined number of reserved sectors which are used for padding the first area are recorded in subsequent sectors such that a size of the first area is an integral multiple of the block size.