Read "write your own operating system" and try to build a Linux environment

After reading "write the operating system by yourself", try to build the Linux environment and read "write the operating system by yourself" and then try again. Because I don't want to use windows as the development platform, I have built a Linux card distribution platform. Tools required for www.2cto.com: nasm, qemu, dd first, create...
After reading "write the operating system by yourself", try to build the Linux environment and read "write the operating system by yourself" and then try again. Because I don't want to use windows as the development platform, I have built a Linux card distribution platform. Tools required for www.2cto.com: nasm, qemu, and dd: First, create a disk image file. Edit a boot. the asm file is as follows: the assembly code org 07c00h tells the compiler program to load mov ax, cs mov ds, ax mov es, ax call DispStr at 7c00; call the display string routine jmp $; infinite Loop DispStr: mov ax, BootMessage mov bp, ax; ES: BP = string address mov cx, 16; CX = string length mov ax, 01301 h; AH = 13, AL = 01 h mov bx, 000ch; page number is 0 (BH = 0) black bottom red letter (BL = 0Ch, highlighted) mov dl, 0 int 10 h; ret BootMessage: db "Hello, OS world! "Times 510-($-$) db 0; fill in the remaining space to make the generated binary code exactly 512 bytes dw 0xaa55; end Mark www.2cto.com 1. Compile with nasm: $ nasm boot. asm-o boot. bin to get a 512-byte boot. binfile. this is the code in the boot sector of the floppy disk. 2. you can use the following command to generate a disk image File: $ dd conv = sync if = boot. bin of = boot. img bs = 1440 k count = 1 so that we can get the disk image boot. img. Note that conv = sync in the command. With this option, each input block can be filled with ibs bytes, and the remaining part can be filled with NULL characters. In this example, the input file contains only 512 bytes, but the output file requires MB. Therefore, I used this option. 3. use qemu to start the image File: qemu-fda boot. img-boot a-m 64-localtime