Need help with automatic multi-disc M3U creation

[joelkolb]

Back in January we got:

Quote

• New Feature: LaunchBox will now automatically create multi-disc M3U playlist files for emulators/cores that support it. You can enable this feature under Tools > Manage Emulators in the Associated Platforms tab. Known Retroarch cores that have m3u support are mednafen_saturn_libretro, mednafen_psx_libretro, and flycast_libretro.

I am struggling to get this feature to work. Currently the only system I am working with that this feature applies to is Sony Playstation. I am using RetroArch with the mednafen_psx_libretro core for PS1. I have checked the box in the column "Use M3U Playlists for Multiple Discs" under "Associated Platforms". I then imported my ps1 games. I have several multi-disc games. My games are in CHD format. Each multi-disc game gets imported as a single game with multiple apps, which I believe is as it should be. However, when I look in the "Games\Sony Playstation" folder I don't see ant M3U files and when I launch the game and try to swap discs in RetroArch it does not automatically give me a list of the other discs that are part of the game. Instead I have to browse for the disc file I want to load starting from LaunchBox's temp folder. I have attached screenshots to show how things are configured and what I am seeing.

I would be grateful for any help in figuring out how to get this working.

[neil9000]

35 minutes ago, joelkolb said:

Back in January we got:

I am struggling to get this feature to work. Currently the only system I am working with that this feature applies to is Sony Playstation. I am using RetroArch with the mednafen_psx_libretro core for PS1. I have checked the box in the column "Use M3U Playlists for Multiple Discs" under "Associated Platforms". I then imported my ps1 games. I have several multi-disc games. My games are in CHD format. Each multi-disc game gets imported as a single game with multiple apps, which I believe is as it should be. However, when I look in the "Games\Sony Playstation" folder I don't see ant M3U files and when I launch the game and try to swap discs in RetroArch it does not automatically give me a list of the other discs that are part of the game. Instead I have to browse for the disc file I want to load starting from LaunchBox's temp folder. I have attached screenshots to show how things are configured and what I am seeing.

I would be grateful for any help in figuring out how to get this working.

The .m3u files are temporary and only created when the game is launched and only stored in the temp folder, nothing is edited/added to your actual rom folders.

In Retroarch you need to "eject" the disc first.

So go to disc control.

Then eject disc.

Then current disc index.

Which will list the discs.

[joelkolb]

I'll be darned. Thank you @neil9000. Based on the info you provided I think I was also trying to use RetroArch's disc control incorrectly altogether regardless of LaunchBox. It's been a while since I've messed with multi-disc game emulation. But it is working perfectly. Thanks again.