自己编写的代码，能自己设置开机启动项，并且代码移植性高-To write your own code, can set up their own start-up items and code portability

在DOS环境下读取笔记本的256 bytes CMOS数据，并可以修改你的开机启动项-In the DOS environment, read the 256 bytes CMOS data notebook, and can modify your boot options