I don't remember getting this message with reicast. Does it show when you're launching the game ? Usually, if the ROM/disc image is not correct, you're returned to the game list. Did you try to launch the same game with flycast ?

@Crimson0087 I found the bat file..it came with the CHDMAN application. I did this exactly like you said as well as a youtube video and it did compress the file...the problem perhaps isnt that its not being compressed it is that the emulator REDREAM nor any other emulator will not recodnize it..If it helps I am doing this all on a windows pc and transferring it to the RPI

https://pastebin.com/hDdGfrDm Here it is, I hope this helps. [edit] Had a quick read through of the log myself after posting it. I noticed I didn't actually have a bios file to boot to. Bios file copied, problem solved. Thanks @mitu

One game I cannot get to work even with flycast is Hydro Thunder. I get a black screen after the Dreamcast logo.

@Krakatoa If you are interested, I got other systems working too PS1 games: SSH into \home\RetroPie-Setup\scriptmodules\libretrocores\ Find lr-pcsx-rearmed.sh Open it with Notepad ++ Change the section to be like this: function sources_lr-pcsx-rearmed() {gitPullOrClone "$md_build" github.com/SindenLightgun/pcsx_rearmed.git} Now go into EmulationStation, or SSH into your box (sudo /home/pi/RetroPie-Setup/retropie_setup.sh) Go into Options>RPSETUP Manage packages>Manage main packages>lr-pcsx-rearmed>Remove Then do an update from source. Now when you launch PS1 games, go into Quick Menu, then in Options select Pad 1 Type = guncon When that has finished then you load lr-pcsx-rearmed as your emulator as usual. Then on the menu under options you can change Pad 1 Type to "guncon". Tested on Elemental Gearbolt, Time Crisis I and II and it works well. However, some games are not working, Die Hard/Die Hard 2, Lethal Enforcers I and II. For NES, got into Retroarch Quick Menu Change Port 1 binds device type to "Zapper" Map Wiimote buttons same as on Dreamcast example In Quick Menu, enable "lightgun settings" then go to Options and change Zapper Mode to "Touchscreen" save configs and restart For SNES, similar to NES, but when launching a game, when the splashscreen for NES comes up, press the button on your controller to bring up the launch menu Change the emulator for the rom to "lr-SNES9x" When Retroarch loads, go to main menu inputs Go to Port 2 Binds Select SuperScope Map trigger, alt fire like before In Quick Menu, check lightgun mode "touchscreen" Master System, same as NES Port 1 - MS Light Phasrer In Quick menu turn on show cross hair touchscreen mode save game mappings Megadrive/Genesis: Set port 2 binds to "MD Menacer" Same settings elsewhere (i.e. touchscreen) Still not bad progress!

@quicksilver I know it's a double-sided joke, but actually that game consistently crashed my Pi when overclocked - even with my currently "supposed stable overclock". I had to try out lower resolutions, otherwise after a few minutes of playing it would reboot our of the blue. Disable threaded video on that one. It'll go back to less egregious resource consumption, and work a lot smoother (with G-Sync as well). But yes, if I recall correctly I think I left it on 720p.

@kjgregory83 you might want to try out redream. For now it has better performance/compatability on the pi 4 then flycast does and controller mapping is a breeze.

Please add more info about your system, as detailed in https://retropie.org.uk/forum/topic/3/read-this-first. Some punctuation/phrasing wouldn't hurt either. To better diagnose the error, please add the contents of /dev/shm/runcommand.log log file, taken after you ge the crash, to pastebin.com and post the link here in the topic.

@Ecks The problem existed for a limited timeframe and it was an external factor at stake - not in RetroPie. The fact that you didn't experience it means you didn't run the installation at that particular time.

@g0nz0uk said in What seems to be the go to Pi4 Dreamcast emulator atm?: For some reason I don't get the download option for redream. What version of RetroPie are you using ? EDIT: seems like there's an issue with redream installation at the moment - see https://retropie.org.uk/forum/topic/26461.

Ok I understood what was happening. There were two more optional Dreamcast emulators that I missed installing. The games that were not booting in the Reicast run well on the other two. :)

Thanks for the input everyone. I've got a handful of working games and I'm happy with that for now. I have far more on my Linux tower RetroPie build that is more fit for this kind of thing.

Oh, forgot it is a stand-alone, that is true. I will try to register the analog pad to the d-pad using the script then. Thanks!

@mitu I did a lot of reading around in those docs, but since I didn't require a user/pass for access I didn't know how much of that I should cut out of the line so I browsed forums until I found an example of someone doing what I was trying to. Duly noted, though. Just another thing added to all the stuff I've learned about this stuff in the last couple months. After fixing that, Daphne works as well for me. I knew it was going to be some little minute detail. Thanks again, you're a lifesaver.

@Simrose My issue was solved by inolen and updated redream binary made available. Thanks Sim

@zasx Just want to say thanks for posting this issue and solution as well. Playing the same game and had the same issue. Much better gaming experience now, thanks again.

@mitu thanks for your help I’ll look in to it . I’ll let you know how I get on .

@shavecat Please mind your language.

What game(s) have you tried? It could be a corrupted ROM, so try a few different games or try to find another copy of the game. Have you tried to remove the redream package and re-install from the latest binary? Also have you tried using the lr-flycast or Reicast emulators to run the game instead? Both can be found within the optional packages menu. When launching the ROM, hit a button to choose which emulator to use(once you have installed them). All three emulators run well on my RPI4 4Gb at stock speeds. Only other thing is to think your pi is throttling, have you any heatsinks/cooling? Are you using a case?

@mitu no problem, I’m working around it with the other emulator for now. I’ve not tested what it’s like but I’m sure I can hold on! Thanks!