roska/kernel
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kernel/README.md

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rOSka

  • Probably useless hobby OS project
  • Targets 32bit legacy systems with graphical framebuffer
  • Boots with multiboot compatible bootloader, such as GRUB
  • Assembles with FASM
  • We'll probably use ext2 filesystem

GRUB disk creation

  1. Format disk. Create ext2 partition
  2. Create directory mnt and mount your partition to it 
        mkdir mnt
    sudo mount /dev/sdX1 mnt
  3. Intall grub using sudo grub-install --target=i386-pc --removable --boot-dir=mnt/boot /dev/sdX
  4. Create config 
        menuentry "rOSka" {
        multiboot /boot/roska.bin
        boot
    }
  5. Copy assembled kernel to mnt/boot/roska.bin

extlinux disk creation

  1. Format disk. Create ext2 partition and mark it active boot partition.
  2. Add syslinux to bootloader sudo dd if=/usr/lib/syslinux/bios/mbr.bin of=/dev/sdX
  3. Create directory mnt and mount your partition to it. Add boot directory to it. 
        mkdir mnt
    sudo mount /dev/sdX1 mnt
    sudo mkdir mnt/boot
  4. Install extlinux(syslinux) 
    sudo extlinux --install --device /dev/sdX1 mnt/boot
sudo cp /usr/lib/syslinux/bios/libcom32.c32 mnt/boot/
sudo cp /usr/lib/syslinux/bios/mboot.c32 mnt/boot/
  5. Create config 
        DEFAULT rOSka
    LABEL rOSka
        SAY extlinux is booting rOSka...
        KERNEL /boot/mboot.c32
        APPEND /boot/roska.bin
  6. Copy assembled kernel to mnt/boot/roska.bin
  7. Have no video because naughty implementation doesn't tell us the framebuffer address :(

Oh yeah heres a montrosity I currently use. fasm roska.fasm && sudo mount /dev/sdd1 mnt/ && sudo cp roska.bin mnt/boot/roska.bin && sudo umount /dev/sdd1 && sudo sync && sudo qemu-system-i386 /dev/sdd