You can use a card with fat32 format with just the files needed from current card to boot up cfw and install the firmware in exFat. After that you can use the exfat card.
Chemical Plant Zone of Sonic 2, there is something in that level that give it a very special place in my childhood memories.
(And yes, this is my first post and I've created my account in 2013, I'm always watching in the shadows.)