So I want to know why there is an obsession with putting dreamcast games in formats that are finicky and can be easy to mis-burn even by the software that created the format. Why are they in the cdi format does it have to do with the mil-cd exploit? Wouldn't it be easier to put the disc in the iso format?
Because DC ISOs apparently require some extra stuff that the .iso format can't handle, or so I've heard.
The dreamcast selfboot format requires two sessions. Back in 2000, there was not a lot of format supporting this, cdi was one. Using isos, you'd have to provide two isos, one for each session, and a tutorial on how to burn both to a disc and how to adapt for some old burners. This would rapidly create big issues with people "not too good" with computers and lot of drama. Releasing in cdi forced people to use discjuggler (or IMGBurn now) but created a lot less of "support" and hassle for the release groups.
cdi2nero worked just fine, you could convert any disc juggler to the Nero format which was very popular at the time, like the FamilyGuy said, alternative was to burn each session seperately and using something like cdrecord wasn't as easy for some people