FAT file system
FAT (File Allocation Table) is a file system developed by Microsoft. It was used in DOS and Windows 9x/ME. Linux supports all versions of FAT using the VFAT kernel module.
Although FAT doesn’t provide the same performance as some more modern file systems, it has one great advantage: it is supported by most operating system. Because of it FAT is still the default file system on on floppy disks, USB flash drives, cell phones, and other types of removable storage.