I just got my pie and Retropie set up today. The ROMs are all the right types. I’ve put all my emulators in the correct folders according to the wiki, but the only ones to pop up are my GBA games(which is giving me a missing bios message as well). Any way to get Retropie to recognize everything?
Sometimes zipped files don’t work even if they say they do. When in doubt unzip all ROMs except mame, FBA, and neogeo. See the wiki for the most common file types that work for each system:
If unzipping them didn’t work it could also be a poor source of ROMs or you could verify your es_systems.cfg file was set up properly by typing sudo nano /etc/emulationstation/es_systems.cfg each system should match the file types listed on the wiki pages.