EJECT(1)			 User Commands			      EJECT(1)

NAME
       eject - eject removable media

       eject [options] device|mountpoint

DESCRIPTION
       eject allows removable media (typically a CD-ROM, floppy disk, tape,
       JAZ, ZIP or USB disk) to be ejected under software control. The command
       can also control some multi-disc CD-ROM changers, the auto-eject
       feature supported by some devices, and close the disc tray of some
       CD-ROM drives.

       The device corresponding to device or mountpoint is ejected. If no name
       is specified, the default name /dev/cdrom is used. The device may be
       addressed by device name (e.g., 'sda'), device path (e.g., '/dev/sda'),
       UUID=uuid or LABEL=label tags.

       There are four different methods of ejecting, depending on whether the
       device is a CD-ROM, SCSI device, removable floppy, or tape. By default
       eject tries all four methods in order until it succeeds.

       If a device partition is specified, the whole-disk device is used.

       If the device or a device partition is currently mounted, it is
       unmounted before ejecting. The eject is processed on exclusive open
       block device file descriptor if --no-unmount or --force are not
       specified.

OPTIONS
       -a, --auto on|off
	   This option controls the auto-eject mode, supported by some
	   devices. When enabled, the drive automatically ejects when the
	   device is closed.

       -c, --changerslot slot
	   With this option a CD slot can be selected from an ATAPI/IDE CD-ROM
	   changer. The CD-ROM drive cannot be in use (mounted data CD or
	   playing a music CD) for a change request to work. Please also note
	   that the first slot of the changer is referred to as 0, not 1.

       -d, --default
	   List the default device name.

       -F, --force
	   Force eject, don’t check device type, don’t open device with
	   exclusive lock. The successful result may be false positive on non
	   hot-pluggable devices.

       -f, --floppy
	   This option specifies that the drive should be ejected using a
	   removable floppy disk eject command.

       -i, --manualeject on|off
	   This option controls locking of the hardware eject button. When
	   enabled, the drive will not be ejected when the button is pressed.
	   This is useful when you are carrying a laptop in a bag or case and
	   don’t want it to eject if the button is inadvertently pressed.

       -M, --no-partitions-unmount
	   The option tells eject to not try to unmount other partitions on
	   partitioned devices. If another partition is still mounted, the
	   program will not attempt to eject the media. It will attempt to
	   unmount only the device or mountpoint given on the command line.

       -m, --no-unmount
	   The option tells eject to not try to unmount at all. If this option
	   is not specified then eject opens the device with O_EXCL flag to be
	   sure that the device is not used (since v2.35).

       -n, --noop
	   With this option the selected device is displayed but no action is
	   performed.

       -p, --proc
	   This option allows you to use /proc/mounts instead /etc/mtab. It
	   also passes the -n option to umount(8).

       -q, --tape
	   This option specifies that the drive should be ejected using a tape
	   drive offline command.

       -r, --cdrom
	   This option specifies that the drive should be ejected using a
	   CDROM eject command.

       -s, --scsi
	   This option specifies that the drive should be ejected using SCSI
	   commands.

       -T, --traytoggle
	   With this option the drive is given a CD-ROM tray close command if
	   it’s opened, and a CD-ROM tray eject command if it’s closed. Not
	   all devices support this command, because it uses the above CD-ROM
	   tray close command.

       -t, --trayclose
	   With this option the drive is given a CD-ROM tray close command.
	   Not all devices support this command.

       -v, --verbose
	   Run in verbose mode; more information is displayed about what the
	   command is doing.

       -X, --listspeed
	   With this option the CD-ROM drive will be probed to detect the
	   available speeds. The output is a list of speeds which can be used
	   as an argument of the -x option. This only works with Linux 2.6.13
	   or higher, on previous versions solely the maximum speed will be
	   reported. Also note that some drives may not correctly report the
	   speed and therefore this option does not work with them.

       -x, --cdspeed speed
	   With this option the drive is given a CD-ROM select speed command.
	   The speed argument is a number indicating the desired speed (e.g.,
	   8 for 8X speed), or 0 for maximum data rate. Not all devices
	   support this command and you can only specify speeds that the drive
	   is capable of. Every time the media is changed this option is
	   cleared. This option can be used alone, or with the -t and -c
	   options.

       -h, --help
	   Display help text and exit.

       -V, --version
	   Display version and exit.

EXIT STATUS
       Returns 0 if operation was successful, 1 if operation failed or command
       syntax was not valid.

NOTES
       eject only works with devices that support one or more of the four
       methods of ejecting. This includes most CD-ROM drives (IDE, SCSI, and
       proprietary), some SCSI tape drives, JAZ drives, ZIP drives (parallel
       port, SCSI, and IDE versions), and LS120 removable floppies. Users have
       also reported success with floppy drives on Sun SPARC and Apple
       Macintosh systems. If eject does not work, it is most likely a
       limitation of the kernel driver for the device and not the eject
       program itself.

       The -r, -s, -f, and -q options allow controlling which methods are used
       to eject. More than one method can be specified. If none of these
       options are specified, it tries all four (this works fine in most
       cases).

       eject may not always be able to determine if the device is mounted
       (e.g., if it has several names). If the device name is a symbolic link,
       eject will follow the link and use the device that it points to.

       If eject determines that the device can have multiple partitions, it
       will attempt to unmount all mounted partitions of the device before
       ejecting (see also --no-partitions-unmount). If an unmount fails, the
       program will not attempt to eject the media.

       You can eject an audio CD. Some CD-ROM drives will refuse to open the
       tray if the drive is empty. Some devices do not support the tray close
       command.

       If the auto-eject feature is enabled, then the drive will always be
       ejected after running this command. Not all Linux kernel CD-ROM drivers
       support the auto-eject mode. There is no way to find out the state of
       the auto-eject mode.

       You need appropriate privileges to access the device files. Running as
       root is required to eject some devices (e.g., SCSI devices).

AUTHORS
       Jeff Tranter <tranter@pobox.com> - original author, Karel Zak
       <kzak@redhat.com> and Michal Luscon <mluscon@redhat.com> - util-linux
       version.

SEE ALSO
       findmnt(8), lsblk(8), mount(8), umount(8)

REPORTING BUGS
       For bug reports, use the issue tracker
       <https://github.com/util-linux/util-linux/issues>.

AVAILABILITY
       The eject command is part of the util-linux package which can be
       downloaded from Linux Kernel Archive
       <https://www.kernel.org/pub/linux/utils/util-linux/>.

util-linux 2.41.2		  2025-09-22			      EJECT(1)