2 questions: Does CDI-->ISO work reliably? and What should happen when you load bootdisk?

[YZF-R6]

OK, i've burn myself a copy of the utopia boot cd using NERO, but when i load it up in the Dreamcast it just goes to the music player screen. When i put the boot cd in my computer to check it out all that i saw on the disc is a file called GURKSAFT.TXT that has a couple words that look like they're german or something.

Other question: Since i have bad memories of having too many cd burning programs on my computer and "reformat c:" i am reluctant to install DiscJuggler in order to burn the CDI files. Do the CDI to ISO converters work well or will i just be making coasters? I would think that if the ISO format burned dc rips properly then the groups would be releasing ISO's, or bin/cue's. Since they are all releasing CDI's i'm assuming there must be some advantage to this format.

Thank you,
T.S.