从使用GRUB / NASM / C构建的内核生成iso

Question

I was following along with this series of articles , and on the last page, he linked an iso image of the kernel that he produced. He doesn't mention this in the series, so that's my question... how do I generate an iso image from my kernel executable?

Answer 1

There are two approaches I generally use. The first is mkisofs , below is what I ripped out from a Makefile I use:

 mkisofs -quiet -R -b boot/grub/eltorito.img       \
         -no-emul-boot -boot-load-size 4           \
         -boot-info-table -o my_iso.iso iso_folder

You will need the El Torito image. You can find more information on this approach here .

The second approach (and the one I prefer) is to use grub-mkrescue :

grub-mkrescue -o bootable.iso iso

For this to work iso/boot/grub/grub.cfg will need to be a valid grub configuration file. I prefer this approach because you can dd the result to a USB and boot. The first approach is using the El Torito which is only for bootable optical media (eg CDs, DVDs) so you can's easily create a bootable USB with the first iso.