How to make a multisessin dvd?

ok, i never burned a multi session dvd/cd before…what i want to know is, i select multisession from the nero menu and i burn some data to a dvd-r (not rw) and later on if i want to add more files to the same dvd-r, would i have to save the image of the dvd that i created or would it automatically recognize the other sessions? eh…im just not sure how to do this…

If you start the DATA DVD as a multisession disc, then when you continue the DVD, previous sessions will automatically be detected.

Helpful user guides can be found at:

thx for the info