NTFS-3G(8)

NAME
ntfs-3g - Third Generation Read/Write NTFS Driver

SYNOPSIS
ntfs-3g device mount_point [-o options]
mount -t ntfs-3g device mount_point [-o options]

DESCRIPTION
ntfs-3g is an NTFS driver, which can create, remove, rename, move files, directories, hard links, and streams; it can read and write files, including streams and sparse files; it can handle special files like symbolic links, devices, and FIFOs; moreover it can also read compressed files.

OPTIONS
Below is a summary of the options that ntfs-3g accepts.

uid=value and gid=value
    Set the owner and the group of files. By default, files and directories are owned by the effective user and group of the mounting process and everybody will have full read, write, execution and directory browsing permissions. If you want to use permissions handling then use these options together with the umask or fmask and dmask options.

umask=value
    Set the bitmask of the file and directory permissions that are not present. The value is given in octal. The default value is 0 which means full access to everybody.

fmask=value
    Set the bitmask of the file permissions that are not present. The value is given in octal. The default value is 0 which means full access to everybody.

dmask=value
    Set the bitmask of the directory permissions that are not present. The value is given in octal. The default value is 0 which means full access to everybody.

ro  Mount filesystem read-only.

locale=value
    You can set locale with this option which is often required to make visible files with national charaters. It's useful if the locale environment variables are not set before partitions had been mounted from /etc/fstab.

force
    Force mount even if the volume is scheduled for consistency check. Use this option with caution and preferably with the ro option.

show_sys_files
    Show the system files in directory listings. Otherwise the default behaviour is to hide the system files. Please note that even when this option is specified, "$MFT" may not be visible due to a glibc bug. Furthermore, irrespectively of show_sys_files, all files are accessible by name, for example you can always do "ls -l '$UpCase'".

allow_other
    This option overrides the security measure restricting file access to the user mounting the filesystem. This option is only allowed to root, but this restriction can be overridden by the

large_read
    Issue large read requests. This can improve performance for some filesystems, but can also degrade performance. This option is mostly useful on 2.4.X kernels, as on 2.6 kernels requests size is automatically determined for optimum performance.

max_read=value
    With this option the maximum size of read operations can be set. The default is infinite. Note that the size of read requests is limited anyway to 32 pages (which is 128kbyte on i386).

silent
    Do nothing on chmod and chown operations, but do not return error. This option is on by default.

no_def_opts
    By default ntfs-3g acts as "silent,allow_other" was passed to it, this option cancel this behaviour.

streams_interface=value
    This option controls how the user can access Alternate Data Streams (ADS) or in other words, named data streams. It can be set to, one of none, windows or xattr. If the option is set to none, the user will have no access to the named data streams. If it's set to windows, then the user can access them just like in Windows (eg. cat file:stream). If it's set to xattr, then the named data streams are mapped to xattrs and user can manipulate them using {get,set}fattr utilities. The default is none.

debug
    Makes ntfs-3g to not detach from terminal and print a lot of debug output from libntfs-3g and FUSE.

no_detach
    Same as above but with less debug output.

ALTERNATE DATA STREAMS (ADS)
All data on NTFS is stored in streams. Every file has exactly one unnamed data stream and can have many named data streams. The size of a file is the size of its unnamed data stream. By default, ntfs-3g will only read the unnamed data stream.

By using the options "streams_interface=windows", you will be able to read any named data streams, simply by specifying the stream's name after a colon. For example:

    cat some.mp3:artist

Named data streams act like normals files, so you can read from them, write to them and even delete them (using rm). You can list all the named data streams a file has by getting the "ntfs.streams.list" extended attribute.

EXAMPLES
Mount /dev/hda1 to /mnt/windows:

    ntfs-3g /dev/hda1 /mnt/windows

or

    mount -t ntfs-3g /dev/hda1 /mnt/windows

Read-only mount /dev/hda5 to /home/user/mnt and make user with uid 1000 to be the owner of all files:

    ntfs-3g /dev/hda5 /home/user/mnt -o ro,uid=1000

/etc/fstab entry for the above:

    /dev/hda5 /home/user/mnt ntfs-3g ro,uid=1000 0 0

Unmount /mnt/windows:

    umount /mnt/windows

You can also unmount /mnt/windows with fusermount:

    fusermount -u /mnt/windows

KNOWN ISSUES
Please see

    http://www.ntfs-3g.org/support.html

for common questions and known issues. If you would find a new one in the latest release of the software then please send an email describing it in detail. You can contact the development team on the ntfs-3g-devel@lists.sf.net address.

AUTHORS
ntfs-3g was based on and a major improvement to ntfsmount and libntfs which were written by Yura Pakhuchiy and the Linux-NTFS team. The improvements were made, the ntfs-3g project was initiated and currently led by long time Linux-NTFS team developer Szabolcs Szakacsits (szaka@sienet.hu) to revive the stalled open source development and project management.

THANKS
Several people made heroic efforts, often over five or more years which resulted the ntfs-3g driver. Most importantly they are Anton Altaparmakov, Richard Russon, Szabolcs Szakacsits, Yura Pakhuchiy, Yuval Fledel, and the author of the groundbreaking FUSE filesystem development framework, Miklos Szeredi.

SEE ALSO
ntfsprogs(8), attr(5), getfattr(1)