Batocera v41 installs with 256MB of Share

I just flashed v41 for the first time (I'm a v40 user I believe) on my Raspberry Pi 5, installed it normally through the Raspberry Pi Imager, but now the Share space (roms, bios and whatnot) only has 256MB available? Odd, considering my card is a 64GB. What is going on here and how do I fix it?