src=hello.asm
bootstrap=boot.img

boot:boot.img 
boot.img:hello.asm
	nasm $(src) -o  $(bootstrap) 
fat12:
	@dd if=/dev/zero of=$(bootstrap) seek=1 count=2879 >> /dev/zero
	@ls -al $(bootstrap)

loop:fat12
	-sudo umount /mnt
	sudo mount -t msdos -o loop,fat=12   $(bootstrap) /mnt 


run:boot fat12
	qemu-system-i386  -drive file=$(bootstrap),if=floppy

runusb:writeusb
	sudo qemu   -drive file=/dev/sdb,if=floppy



runas:
	qemu -drive file=$(bootstrap),if=floppy

writeusb:
	sudo dd if=$(bootstrap) of=/dev/sdb