NEWFS_EXFAT(8)						    BSD System Manager's Manual 					    NEWFS_EXFAT(8)

NAME

     newfs_exfat -- construct a new ExFAT file system

SYNOPSIS

     newfs_exfat [-N] [-R] [-I volume-serial-number] [-S bytes-per-sector] [-a sectors-per-FAT] [-b bytes-per-cluster] [-c sectors-per-cluster]
		 [-n number-of-FATs] [-s total-sectors] [-v volume-name] special

DESCRIPTION

     The newfs_exfat utility creates an ExFAT file system on device special.  If the -R option is not given, and the device is already formatted
     as ExFAT, it will preserve the partition offset, bytes per cluster, FAT offset and size, number of FATs, offset to start of clusters, number
     of clusters, volume serial number, and volume name (label).  If a volume name was specified via the -v option, that name is used instead of
     the volume's previous name.

     The options are as follow:

     -N      Don't create a file system: just print out parameters.

     -R      Do not check whether the device is currently formatted as ExFAT.  Always derive the partition offset, bytes per cluster, FAT offset
	     and size, and offset to start of clusters based on the device type and size.

     -I volume-serial-number
	     Volume ID, a 32-bit integer.

     -S bytes-per-sector
	     Number of bytes per sector.  Acceptable values are powers of 2 in the range 512 through 4096.

     -a sectors-per-FAT
	     Number of sectors per FAT.

     -b bytes-per-cluster
	     File system block size (bytes per cluster).  Acceptable values are powers of 2 in the range 512 through 33554432.

     -c sectors-per-cluster
	     Sectors per cluster.  Acceptable values are powers of 2 in the range 1 through 65536.

     -n number-of-FATs
	     Number of FATs.  Acceptable values are 1 or 2.  The default is 1.	Using any value other than 1 is discouraged, and may be incompati-
	     ble with other devices.

     -s total-sectors
	     The total number of sectors in the device.

     -v volume-name
	     Volume name (label).  The name will be converted to UTF-16, and must be no longer than 11 UTF-16 characters.  ASCII control charac-
	     ters and some punctuation characters are not allowed (similar to DOS 8.3-style names).  NOTE: The volume name may be an empty (zero-
	     length) string.

EXAMPLES

	   newfs_exfat /dev/disk0s1
     Create a file system, using default parameters (or existing ExFAT layout), on /dev/rdisk0s1.
	   newfs_exfat -v Hello disk2s1
     Create a file system with the name "Hello" on /dev/rdisk2s1.

SEE ALSO

     mount_exfat(8), fsck_exfat(8)

DIAGNOSTICS

     Exit status is 0 on success and 1 on error.

HISTORY

     The newfs_exfat command appeared in Mac OS X 10.6.3.

Darwin								 January 19, 2010							    Darwin