Difference between a master DVD and a regular DVD

A "master" disc is one that copies are burned or replicated from.

-DH

Physically there is no difference, because one is a clone of the other. But the master dvd is the one that you can confirm is working and has no flaws, and you use that to dupe or replicate as David says. You keep that one protected and locked away from danger, and a good practice is to make a disk image if you are doing your own duplication. If you lose the .dmg then you can always make another one from the master.

LOL - I wouldn't let it worry you... we all start somewhere.

When you click on 'Build and Format' you get a window appearing which lets you set all kinds of different parameters. At the bottom you will see two drop down boxes. Choose 'Hard Drive' in the top one, and '.img' in the second. This will tell DVDSP to create a disc image and put it in the location that you then specify. When done, you can double click this image and it will open like a DVD disc would - if you have got DVD Player running then your project will run as if it was on a physical disc (although slightly quicker).