Every single pen drive I've bought or been given came pre-formatted with FAT32. Every single SD card I've bought or been given came pre-formatted with FAT32. Li

Every single pen drive I've bought or been given came pre-formatted with FAT32. Every single SD card I've bought or been given came pre-formatted with FAT32. Like it or not, it's the standard filesystem for removable media up to 32 GiB, and has the advantage that unlike exFAT, it works everywhere.