@t01mkr said in Setting up an nvme as rom storage...:

. I was wondering if it's possible to use symbolic links instead. Does anyone know?

Yes, but why ? You're already mounting your disc, why not use the right folder for it in the first place.

@RedbeardTheVast You can try using the procedure to run the ROMs from USB (the Manual mount method) and replace the USB device with SD device, the setup should be the same and it's just the mount device that's different. The USB device should be something like /dev/sda1, the SD device probably something like /dev/mmcblk0p1.