In this case I went with retrofw on the LDK (square) but the process is the same for any compatible device, of which there are .. many:
It is a bit different in that the SD card doesn’t create multiple partitions, so perhaps a bit simpler?
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You image the OS to the SD card, then boot it up so it can repartition everything. The resulting folder structure is very simple.
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After first boot it’s time to remove the SD card again and copy the emulators from the starter packs over. I wasn’t quite clear what folder to put these in, since the folder structure is so simple, so I put them in the same folder as the one app.
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Next copy the ROMs over in the
/romsfolder. If you get the subfolder naming right, the emulators will know the right place to look for appropriate ROMs upon launch.
Boot up and remove / hide all the emulators you don’t want. You can do this via the select button with the emulator highlighted. It’s not totally clear to me which emulators are “better” to use because there is some overlap, like there are multiple Gameboy Advance emulators, gbSP and ReGBA for example.