Hello, good day. I have the emulator of dreamcast nullDC in various version and i formatted the memori cards in them, and i can save the game but when i open the emulator again and i try to load the game it appear the information about the save i made, but it don´t load. and if i try to star a new game, it say me that te memory cards haven´t been formatted. why?

Why should i do?

I do this with shenmue, it the only game that i want to play in dreamcast.