X86平台操作系统引导技术研究与实现

A Study on and Implementation of Booting Techniques of the Operating System on X86 Platform

文章介绍X86平台软盘引导操作系统的三种典型介质存储结构,以一个演示实验为例阐述保护模式下操作系统引导启动的常用技术及实现方法,内容包括操作系统的软盘引导、打开A20线、设置GDT及IDT、进入保护模式、安装ELF格式内核模块、内核框架、直接写屏、以及启动运行内核模块等。

The paper introduces three kinds of typical medium storage structure for booting operating system from a floppy disk on the X86 platform, and taking a demo experiment for example, describes the commonly-used techniques and implementation methods of booting and starting operating system in a protected mode, including booting operating system from a floppy disk, turning on A20 line, setting GDT and IDT, jumping into the protected mode, installing the ELF formatted kernel module, kernel frame, direct screen writing, and starting the kernel module, etc.