A test operating system made for fun
This repository has been archived. It will stay here, however development of kOS has moved over to this organization: https://github.com/koperatingsystem
The bootloader is designed with floppy disks and x86
BIOS systems in mind, and will attempt to read code
from 2 sectors on a floppy disk starting from the
second one. The loading message and pretty much
anything else can be adjusted pretty easily as long
as you read the comments in bootloader.asm. It is meant
to be built as a raw binary with nasm in 16-bit real mode.
It can then be burnt into media, or written to a disk image. It must always be in the first sector of the media/image.
This bootloader has been deprecated in favor of the below GRUB + Stage 2 bootloader, and is kept only for research purposes
kOS has switched from using a stage 1 bootloader to using GRUB + a stage 2 bootloader. This provides several benefits, most notably easily booting off of multiple types of media with no changes to kOS' bootloader, and also multiboot support.
Compiling kOS is rather simple. All you need to do is run:
./build.sh # Build object files
./iso.sh # Generate bootable ISO You can also test this on qemu-system-i386 by running
./qemu.sh