Choosing spanning options

If you are working with a Data Disc project in Creator Classic, you can choose to disable disc spanning to prevent a file that is small enough to be written on a single disc from being split across discs. If you choose this option and your project contains a file that is too large to fit on a single disc by itself, the file will be split across discs to allow the project to be written.

To disable spanning:

1
Click Project Settings (or choose File > Project Settings), and then click General.
2
Select Do not split files in multi-disc projects, and then click OK.
See also: 

Choosing spanning options