H. Peter Anvin wrote: > That stuff I already have. The issue is the boot sector itself, which > is a binary program. Try this one: It seems to be Freedos-Bootsector code. http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/freedos/kernel/boot/boot.asm?rev=1.10&content-type=text/vnd.viewcvs-markup bye Christian