firstly emulation station recognises I have games in the ROMs folder for Genesis, I have put 7 games in there, when I select the game, the screen goes black and brings up this error
powering on HDMI with explicit settings [cea mode 4]
RetroArch [ERROR] :: liberto [ERROR] :: failed to detect rom/cd image type.
RetroArch [ERROR] :: Failed to load game.
powering on HDMI with prefered settings
followed by returning me to the emulation station genesis game select screen. the file types I am using are .gen, Im assuming they are the correct ones as they work for emulation on my laptop and have worked on a friends retropie set up, any help will be superb as Im at a loss.
This error is thrown when picodrive can’t determine the media type. Here are some of the possible issues I can think of:
If the version of picodrive you have doesn’t support the .gen extension. Try renaming one to .bin to test and if that works you might try downloading a fresh 2.3 sd image.
A less likely option, since you said they work on a friends retropie, is that the files are not a raw binary file and are in the multi game doctor format which isn’t supported in picodrive and you can convert them using a tool like SBWin to a bin.
I have the same issue. All other systems work fine, but my smd files would loop back to the gui. I had one bin rom that would work so I used sbwin to convert my roms to bin, but they still won’t load. Is there a known set that works?