create new session but NOT import old session: is it possible for DVD-R

[Zhang Weiwu <zhangweiwu@realss.com>]

Hello. For a CDR I can do it this way to create a new session without
importing old session:

$ mkisofs -C xxx,xxx root-folder/ | cdrecord -multi -data dev=/dev/cdr -

The trick is to create iso image using -C but NOT use -M.

Now with growisofs this seems impossible because in order to create a
new session on DVD-R with exesting sessions '-M' must be used.

With DVD-R is it possible to append new session NOT based on the old
session?