| MOUNT_NTFS(8) | System Manager's Manual | MOUNT_NTFS(8) | 
mount_ntfs —
| mount_ntfs | [ -a] [-i]
      [-uuid]
      [-ggid]
      [-mmask]
      special node | 
mount_ntfs command attaches the NTFS filesystem
  residing on the device special to the global
  filesystem namespace at the location indicated by
  node. Both special and
  node are converted to absolute paths before use. This
  command is normally executed by
  mount(8) at boot time, but can be
  used by any user to mount an NTFS file system on any directory that they own
  (provided, of course, that they have appropriate access to the device that
  contains the file system).
The supported NTFS versions include both NTFS4, as used by Microsoft Windows NT 4.0, and NTFS5, as used by Microsoft Windows 2000 and XP.
The options are as follows:
-a-i-u
    uid-g
    gid-m
    maskfoo[[:ATTRTYPE]:ATTRNAME]
‘ATTRTYPE’ is one of identifier listed in $AttrDef file of volume. Default is $DATA. ‘ATTRNAME’ is an attribute name. Default is none.
Examples:
To get volume name (in Unicode):
# cat /mnt/\$Volume:\$VOLUME_NAME
To read directory raw data:
# cat /mnt/foodir:\$INDEX_ROOT:\$I30
Note that it's not currently possible to create or remove files on NTFS filesystems.
Warning: do not mount NTFS filesystems read-write. The write support is not very useful and is not tested well. It's not safe to write to any file on NTFS; you might damage the filesystem. Unless you want to debug NTFS filesystem code, mount the NTFS filesystem read-only.
mount_ntfs and this manual
  were originally written by Semen Ustimenko
  <semenu@FreeBSD.org>.
The NetBSD port was done by
  
  Christos Zoulas ⟨christos@NetBSD.org⟩
    and
  
  Jaromir Dolecek
  ⟨jdolecek@NetBSD.org⟩.
If the attempt to mount NTFS gives you an error like this:
# mount -t ntfs /dev/wd0k /mnt mount_ntfs: /dev/wd0k on /mnt: Invalid argument
make sure that appropriate partition has correct entry in the disk label, particularly that the partition offset is correct.
Recently many cards (in particular SDXC ones) are formatted using exFAT. For those cards, disklabel reports NTFS as the partition type. There is currently no support for mounting exFAT drives.
If the NTFS partition is the first partition on the disk, the offset should be '63' or '2048' on i386 (see disklabel(8)). exFAT partitions typically report an offset of '32768'. mbrlabel(8) could help you to set up the disk label correctly.
If the NTFS partition is marked as
    ‘dynamic’ under Microsoft Windows XP,
    it won't be possible to access it under NetBSD
    anymore.
| September 9, 2015 | NetBSD 10.0 |