a nonvolatile semiconductor storage device and method of managing the same are provided . the nonvolatile semiconductor storage device includes a nonvolatile memory configured to be electrically rewritable ; and a controller configured to control an access area of the nonvolatile memory on the basis of information associated with management of the nonvolatile memory . the controller partitions an area of the nonvolatile memory for management and numbers management information for managing data for each area and a map of the management information in an integrated manner to write the numbered management information and map to the nonvolatile memory , thereby determining whether the management information and the map are normal on the basis of the numbering .