u/SupaRetro64

hello, I have a pc-engine duo-rx fully serviced/recapped.

I played a super cd-rom game on it, and I could save my progression without any extension, the internal save of my console did the job : each time I powered on my console, the save was here, and I continued my progression without issue during a month.

but then, I completely unplugged the console off during 9 months, and, when I go back in the game, the save disapeared, and I had just new files to start the game at the beginning.

so, my question is : is that normal ? if no, what I must do to correct the issue ? if yes, does it exist an extension to keep the saves "forever" ? (I heard about tenokoe bank, but not sure it works with cd games).

thanks.