So after a few months of test and for test who played Dreamcast a lot or tested a lot of different games, what is the preferred format :
- CDI seems to offer the best compatibility but it is a degraded / compressed format
- GDI is a full 1:1 format accuretly dumping the game but the compatibility with current emulator isn't very good
- CHD is compatible with the emulator but people doesn't mention it very much : when converting GDI to CDI is the compatibility as least as good as CDI ? also can you convert ISO (which aren't compatible with the emulator) to CHD ?