See if
this page is of any help. It looks like they are creating a bootable ISO image with
mkisofs and then burning that image to DVD with
growisofs. This is an alternate way to use
growisofs rather than using
growisofs to actually create the ISO. This usage make
growisofs a bit of a misnomer, but I have used it to burn DVDs. You can read about this usage of
growisofs in its
man page.
Good luck.
