ASSEMBLY AND BOOT LOADERS AND SHIT

k, so my program needs to boot a hard disk. how the fuck do i do that.
isn't it enough that i read the boot sector to 07c00h, set dl, and jmp there? doesn't seem to work. shit

>>8 GOD DAMN IT I'M SO FUCKING TIRED OF THIS BOARD COULD YOU GET TO THE POINT AND HELP ME INSTEAD OF BICKERING OVER POINTLESS SHIT AAAAAAAAAAAAAAAAAAAAAAAAA