mkexfatfs creates an exFAT file system on a block device. device
is a special file corresponding to the partition on the device. Note that if
this is an MBR partition then the file system type should be set to 0x07
(NTFS/exFAT) otherwise other operating systems may refuse to mount the file
A 32-bit hexadecimal number. By default a value based on current time is
Volume name (label), up to 15 characters. By default no label is set.
First sector of the partition starting from the beginning of the whole
disk. exFAT super block has a field for this value but in fact it's
optional and does not affect anything. Default is 0.
Number of physical sectors per cluster (cluster is an allocation unit in
exFAT). Must be a power of 2, i.e. 1, 2, 4, 8, etc. Cluster size can not
exceed 32 MB. Default cluster sizes are: 4 KB if volume size is less than
256 MB, 32 KB if volume size is from 256 MB to 32 GB, 128 KB if volume
size is 32 GB or larger.