I'm trying to burn a 25Gig project into few data dvds using "Project Manager", it tells me that there is not space in the disc, which I know each disc is only 4.7GB, but I thought I would have the option to copy to disc 1, disc 2, disc3, and so on.
It's there a way to do this in Premiere?
You will need a third party utility. Make your copy to your hard disk and then use a file splitting utility to span several DVD discs or simpler yet use a single Blu-ray disc.
I agree with Bill. I use Norton Ghost for spanning DVD's for backups like this. There are others, but PrPro Project Manager will only save to an adequately sized HDD, internal, or external. No spanning capability built in.