eject manpage

Search topic Section

EJECT(1)			 User Commands			      EJECT(1)

       eject - eject removable media

       eject [options] device|mountpoint

       Eject  allows  removable	 media (typically a CD-ROM, floppy disk, tape,
       JAZ, ZIP or USB disk) to be ejected under software control.   The  com-
       mand  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 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.

       -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.   Linux 2.0 or higher is required to use this fea-
	      ture. The CD-ROM drive can not 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

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

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

       -F, --force
	      Force eject, don't check device type.

       -h, --help
	      Print a help text and exit.

       -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 inadver-
	      tently pressed.

       -p, --proc
	      This option allow you to use /proc/mounts instead /etc/mtab.  It
	      also passes the -n option to umount(1).

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

       -m, --no-unmount
	      The option tells eject to not try to unmount at all.

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

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

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

       -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.

       -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.

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

       -V, --version
	      Display program version and exit.

       -x, --cdspeed <speed>
	      With this option the drive is given a CD-ROM select  speed  com-
	      mand.   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.

       -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 drive may not  cor-
	      rectly  report the speed and therefore this option does not work
	      with them.

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

       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 limita-
       tion  of	 the  kernel  driver  for the device and not the eject program

       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

       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  --no-partitions-unmount). If an unmount fails, the pro-
       gram 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

       If the auto-eject feature is enabled, then the  drive  will  always  be
       ejected	after running this command.  Not all Linux kernel CD-ROM driv-
       ers 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).

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

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

       The  eject  command  is part of the util-linux package and is available
       from Linux Kernel  Archive  <ftp://ftp.kernel.org/pub/linux/utils/util-

Linux				  April 2012			      EJECT(1)