A Simple 32-bit OS lab tutorial.

Overview

summer

一个支点撬动操作系统大山


项目名称:逸仙OS简明教程 ( YatSenOS Volume First )
所属机构:中山大学操作系统实验课程组

写在前面

项目结构

  • appendix用于存放一些先修知识的介绍。
  • labX用于存放第X次实验,在labX文件夹下
    • gallery用于存放指导材料中的图片资源。
    • src用于存放示例代码。
    • README.md是指导材料。
  • env用于存放特定版本的软件。
  • references用于存放参考资料。
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Comments
  • 记录一下 lab2 实操过程出现的问题及其解决办法

    记录一下 lab2 实操过程出现的问题及其解决办法

    环境:ubuntu 16.04

    1. 编写 MBR
    • 现象:输入
    qemu-system-i386 -hda hd.img -serial null -parallel stdio 
    

    无法启动 qemu,提示

    WARNING: Image format was not specified for 'hd.img' and probing guessed raw.
             Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted.
             Specify the 'raw' format explicitly to remove the restrictions.
    Could not initialize SDL(No available video device) - exiting
    

    原因:提示已经很清楚了,需要换一种指明格式的写法输入命令:

    qemu-system-i386 -drive file=hd.img,format=raw,index=0,media=disk -serial null -parallel stdio -curses
    

    -drive 那一串跟 -hda 是一个意思,只是写法形式不一样,后面加的 -curses 是为了解决 Could not initialize SDL(No available video device) - exiting,但是不知道如何在 mac 下退出 -curses 模式,只能 kill 掉 qemu 进程

    opened by rust17 0
  • 记录一下 lab1 实操过程出现的问题及其解决办法

    记录一下 lab1 实操过程出现的问题及其解决办法

    1. 编译内核
    • 现象:在执行完 make menuconfig 后无法找到 bzImagevmlinux
    • 原因:一开始 lab1 使用了非用户根目录,而是在其他的目录里面,后来把 lab1 放在 ~/ 下再重新操作一遍就好了
    1. 加载 Busybox
    • 现象:在执行
    qemu-system-i386 -kernel linux-5.10.19/arch/x86/boot/bzImage -initrd initramfs-busybox-x86.cpio.gz -nographic -append "console=ttyS0"
    

    时,控制台提示:

    [    2.095489] Run /init as init process
    [    2.096723] Failed to execute /init (error -8)
    [    2.099737] Run /sbin/init as init process
    can't run '/etc/init.d/rcS': No such file or directory
    can't open /dev/tty2: No such file or directory
    can't open /dev/tty3: No such file or directory
    can't open /dev/tty4: No such file or directory
    
    • 原因:自定义的 init 程序执行失败,执行了 BusyBox 自己的 init 程序,导致了一些连带问题。后来修改 init 文件如下就可以了:
    #!/bin/sh
    mount -t proc none /proc
    mount -t sysfs none /sys
    echo -e "\nBoot took $(cut -d' ' -f1 /proc/uptime) seconds\n"
    exec /bin/sh
    
    opened by rust17 0
Owner
Yat-Sen OS
Operating System Projects of Sun Yat-Sen University.
Yat-Sen OS
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