Cannot get Genesis/Megadrive ROMs to work

[okingyo]

Hello all,

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

Performance
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
ondemand

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.

Cheers oKINGYo

[proxycell]

did you use the retropie image or run the compiler script?
do these roms work in an emulator on another computer?

i have not had anything but great success with genesis, haven’t needed any special configuration

[sselph]

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.
• The files were corrupted during the copy.

[Floob]

In your /etc/emulationstation/es_systems.cfg file, are you running the roms with this entry, i.e. running it with RetroArch?

    <system>
        <fullname>Sega Mega Drive / Genesis</fullname>
        <name>megadrive</name>
        <path>~/RetroPie/roms/megadrive</path>
        <extension>.smd .SMD .bin .BIN .gen .GEN .md .MD .zip .ZIP</extension>
        <command>/opt/retropie/supplementary/runcommand/runcommand.sh 4 "/opt/retropie/emulators/RetroArch/installdir/bin/retroarch -L /$
        <!-- alternatively: <command>/opt/retropie/supplementary/runcommand/runcommand.sh 1 "/opt/retropie/emulators/dgen-sdl/installdir$
        <!-- alternatively: <command>export LD_LIBRARY_<path>"/opt/retropie/supplementary/dispmanx/SDL12-kms-dispmanx/build/.libs"; /opt$
        <platform>genesis,megadrive</platform>
        <theme>megadrive</theme>
    </system>

[meowpiggums]

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?

[meowpiggums]

I downloaded a Romset that was .md format and that one works great. Try googling everdrive md romset and look for the is isozone link, someone named smoke monster posted it.

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