I'm new in this forum. My dreamcast roms don't work. For example, in crazy taxi, after starting the game, it says that I have to press A to create a new file in vmu to save, but it also says "vmu in a1 is in use", and I can't do anything, even if I press A. I have done everything I have to, like renaming the name of the BIOS files, and formating the VMU. Any ideas? I hope you can help me. I have a Raspberry pi 3 b+.