yeah, exfat be like that... usually you'd use ext4, maybe you can use ntfs
uefi is another one of these "innovations" that have done nothing but cause trouble, like wayland
Discussion
Well in this case I think the problem is Ventoy using the partition itself to load the iso. I wouldn’t expect the filesystem to matter.
Although this does make me wonder if I can replace Ventoy’s exFAT partition with an ext4 one. I doubt it would work, but one can dream.
vfat has a limit of 4Gb files, which can be a problem with many live ISO images, most amusingly, windows
if none of your ISO images are over 4gb in size you got no problem just reformatting the exfat partition to vfat
no, you can't change it, i am pretty sure it has to be either FAT32 or exFAT
it does have other loading modes if you explore the menu, one of them i think it copies the iso to memory and boots from there, and anyway, if it's linux, most linux live images are under 4gb so you can use FAT32, but either way, yes you can make other partitions, usually ventoy puts itself on a partition at the end of the disk, usually fat32 as this works on both BIOS and UEFI, and then it typically partitions the rest of the disk as exFAT but it can also be FAT32 and i think the only limitation is you need to have that as the first partition, you can make persistent storage on an ext4 partition on the remainder of the disk in between these two
For this kind of use I would go with vfat, less problem, better kernel support across not-common distros. Limitations are not present if limits are not pushed...