Manual page and help for the mkfs.exfat and mkexfatfs linux commands. The mkfs.exfat / mkexfatfs command creates an exFAT file system on a block device. The "device" parameter is a special file that specifies the access to the device under operation (eg / dev / sdXX). Must be entered. Note that if this is an MBR partition, the file system type must be set to 0x07 (NTFS / exFAT), otherwise other operating systems may refuse to mount the file system.