Find the USB flash drive in This PC and right-click on it. WARNING: Formatting the USB device will delete all content on the device. The purpose of its development was to be a better version of the FAT16 in terms of speed, performance, robustness, flexibility, and to support larger volumes. Please note this will ERASE the drive, so if you want to keep all of the files, back them up to your Mac first. Formatting would erase data completely, make sure that you have a data backup. The user should try all the options to make it visible whether it is a Windows or Mac. I bought a new one, and added the TeslaCam folder, but when I try to format it, the option for Fat32 isn’t there. How to Format a USB Flash Drive Using Mac. This can be done by any backup methods of your choice. If it's FAT32 or exFAT, convert it to NTFS for Xbox one in the next Move.