Patent ID: 8291155

Claim:
A data access method, for accessing a non-volatile memory module, wherein the non-volatile memory module has a plurality of physical blocks, the data access method comprising: at least grouping the physical blocks into a data area, a spare area, and a system area; configuring a plurality of logical addresses and grouping the logical addresses into a plurality of logical blocks for mapping to the physical blocks of the data area; using a file system to format the logical addresses into one partition, wherein the partition has a file and a file description block (FDB) corresponding to the file, and the partition has at least one file allocation table for storing at least one entry value corresponding to the logical addresses storing the file description block; searching an end mark among the at least one entry value according to the at least one file allocation table; setting at least one logical address storing the end mark among the logical addresses storing the at least one file allocation table as at least one default pattern address; and taking at least one value stored in the at least one logical address storing the end mark as at least default value corresponding to the at least one default pattern address.