NetBSD/x86 Install CD
- take $OBJDIR/releasedir/i386 and copy it to a empty working directory (/tmp/cd) (/tmp/cd/i386)
- copy $OBJDIR/destdir.i386/usr/mdec/boot to the root of this same directory (/tmp/cd/boot)
copy $OBJDIR/releasedir/i386/binary/kernel/netbsd-INSTALL_LARGE.gz to netbsd(/tmp/cd/netbsd)
run makefs -t cd9660 -o rockridge,bootimage=i386\;$OBJDIR/destdir.i386/usr/mdec/bootxx_cd9660,no-emul-boot /tmp/outputfile.iso /tmp/cd