System for automatically reading stored rewriting data and replacing system generated setup data by the rewriting data before system initialization

摘要

A setup data rewriting device has a nonvolatile memory device that stores rewriting data including registry data. Before the operating system refers to the registry data, the rewriting data is read from the storage device and stored in a memory region of a RAM different from a region where the operating system generates the registry data. Also, before the operating system refers to the registry data, the rewriting data stored in the RAM is used to rewrite the registry data stored in the RAM to the registry data included in the rewriting data.