I was going through some of my older homebrew collection and found my Cave Story disc I burned for Dreamcast a couple of years ago. I figured I might as well make a mockup of a disc label and cover, and add it to my Dreamcast collection. That said, I'd prefer to not use this haphazardly burned disc.

My question is: is there any tool I can use to either:

1: Add garbage/padding to the .cdi so the game itself is burned to the outer area of the disc

OR

2: Is there a burning tool that can burn it to the end of the disc. (by probably adding garbage/padding)

I remember the Dreamcast having troubles with streaming Cave Story's music, so I figured burning it like this would fix the issue. It's been a couple of years since I've messed with disc burning, so I figured I'd ask here. I don't remember anything, outside of some Linux software, that does what I'm asking.