操作系统的boot代码有很多，并且大部分是相似的。本实验仿照Linux-0.11/boot目录下的bootsect.s和setup.s，以剪裁它们为主线-Of the operating system boot code that there are many, and most are similar. In this study, modeled Linux-0.11/boot directory bootsect.s and setup.s, in order to tailor them to the main line