Is it safe to say theat all emty CDs have around 359000 free Blocks,or can on different CDs be different?
Never heard of 800MB CD's?
I think the savest way is to query Nero about the number of free blocks!
Although that sounds like a reasonable figure, you should really not assume anything and do a check every time. For instance, there are those business-card type of discs which do not have that kind of capacity.