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

NAME
     mount_exfat -- mount an ExFAT file system

SYNOPSIS
     mount_exfat [-o options] [-u uid] [-g gid] [-m mask] device directory

DESCRIPTION
     The mount_exfat command mounts the ExFAT filesystem from the device
     device onto the directory given by directory.  This command is normally
     invoked by diskarbitrationd(8) as the result of detecting a device with a
     file system recognized as ExFAT.  It can also be invoked indirectly by
     executing the mount(8) command with the -t exfat option.

     The options are as follows:

     -o options
             Use the specified mount options, as described in mount(8).

     -u uid  Set the owner of the files in the file system to uid.  The
             default owner is the owner of the directory on which the file
             system is being mounted.

     -g gid  Set the group of the files in the file system to gid.  The
             default group is the group of the directory on which the file
             system is being mounted.

     -m mask
             Specify the maximum file permissions for files in the file sys-
             tem.  (For example, a mask of 755 specifies that, by default, the
             owner should have read, write, and execute permissions for files,
             but others should only have read and execute permissions.  See
             chmod(1) for more information about octal file modes.)  Only the
             nine low-order bits of mask are used.  The default mask is taken
             from the directory on which the file system is being mounted.

     If none of the -u, -g, or -m options are given, the volume will be
     mounted with the MNT_UNKNOWNPERMISSIONS flag (equivalent to the -o
     noowners option).

     If the device is internal and not removable, the volume will be mounted
     with the MNT_ASYNC flag (equivalent to the -o async option) by default.
     That default can be overridden with the -o noasync option.  When mounted
     with the -o noasync option, metadata updates are synced to disk fre-
     quently (by default, 50ms after the system call that changed the metadata
     returns to its caller).

SEE ALSO
     fsck_exfat(8), exfat.util(8), mount(2), unmount(2), fstab(5), mount(8)

HISTORY
     The mount_exfat utility first appeared in Mac OS X 10.6.3.

Darwin                         January 19, 2010                         Darwin