I want an installboot-style bootfile (like /usr/mdec/biosboot.sym) to be
able to support cd(4) and cd9660 filesystem.

For example, I have old CD drives that aren't bootable, so I want to be
able to use a floppy that can support something like: "boot cd0a:netbsd".

Has anyone done that before?

Or any suggestions for hacking the sys/arch/i386/stand/biosboot code to
support booting from cd device with iso9660 filesystem?

Thanks,

   Jeremy C. Reed
   http://bsd.reedmedia.net/