Operating system development – start using QEMU from floppy drive

mount -oloop ~/Documents/floppy.img /mnt/floppy

cp stage2.bin /mnt/floppy

umount /mnt/floppy

qemu -fda ~/Documents/floppy.img

I have been reading BrokenThorn’s operating system development tutorial, I am creating and loading the second stage boot loader. This tutorial is for Windows, but I am on Linux (Ubuntu 13.04).

This is what I did:

>Use the mkfs.vfat command to create the file floppy.img under ~/Documents/floppy
>Use nasm to compile the boot.asm file and give me boot.bin
> Then I ran this command: dd if = boot.bin of =~/ Documents / floppy / floppy.img bs = 512 count = 1< /p>

So, I have the floppy disk image of the first stage bootloader. When using qemu to start, it works fine.

However, after I create the second stage bootloader, (if I am correct) I will have to install floppy.img and copy stage 2 to the installed file system. In this case, how do I use qemu to boot the installed floppy? Is it even possible? If not, how do I use the second stage bootloader.

Please forgive me for any stupid assumptions/questions because I am a newbie.

Where is your problem? You mount the image:

mount -oloop ~/Documents/floppy.img /mnt/floppy

Copy stage2:

< p>

cp stage2.bin /mnt/floppy

Remove it:

umount /mnt/floppy

and start it with QEMU:

qemu -fda ~/Documents/floppy.img

Look!