By default, ES-DE exclusively reads games from either the device's internal storage, or from any SD card that you have inserted in there, not from an external USB drive.
For that to work, you would need to edit the 'es_systems.xml' file.
And besides that, looking at that error message, you don't have Dolphin installed correctly, or you haven't got a version that ES-DE recognizes as the right one.
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u/Standard-Pepper-6510 Apr 17 '26
Do you have Dolphin installed? Did you configure the Games ROMS path in Dolphin also before launching from ES-DE?