Edit - replaced the SD card with same make/size and that worked.
I am having major issues getting my pi to work with the MT32 software.
I only have a 16gb Micro sd that I have formatted as fat32, and even repartitioned to 4gb and formatted as fat16.
No matter what I do, when I copy the MT32 software over (I also tried ver 0.10.0 that allows a gui when booting!) I get nada on screen or a constant rebooting to the rainbow bootup screen.
I tried a 4gb micro sd card from a different pi I have in the office running lan diagnostics and that boots just fine.
so, before I assume the card is at fault somehow and buy another one, can someone provide a linux SD card image that I can just drop on to the SD card using raspberry pi imager.
My Hat arrived today and I am keen to confirm it works and get it installed at home.
PS, I have the MT32 roms and soundfonts so I am not looking for a Cheat way of getting it all configured, they can be left off any image file that may exits.