eject - eject media such as CD-ROM and floppy from drive
eject [-dfnpq] [device | nickname]
The eject utility is used for those removable media devices
that do not have a manual eject button, or for those that
do, but are managed by Volume Management (see vold(1M)). The
device may be specified by its name or by a nickname; if
Volume Management is running and no device is specified,
the default device is used.
Only devices that support eject under program control
respond to this command. eject responds differently, depend-
ing on whether or not Volume Management is running.
With Volume Management
When eject is used on media that can only be ejected manu-
ally, it will do everything except remove the media, includ-
ing unmounting the file system if it is mounted. In this
case, eject displays a message that the media can now be
manually ejected. If a window system is running, the message
is displayed as a pop-up window, unless the -p option is
supplied. If no window system is running or the -p option is
supplied, a message is displayed both to stderr and to the
system console that the media can now be physically removed.
Volume Management has the concept of a default device, which
eject uses if no pathname or nickname is specified. Use the
-d option to check what default device will be used.
Without Volume Management
When Volume Management is not running and a pathname is
specified, eject sends the eject command to that pathname.
If a nickname is supplied instead of a pathname, eject will
recognize the following list:
| Nickname | Path |
| fd | /dev/rdiskette |
| fd0 | /dev/rdiskette |
| fd1 | /dev/rdiskette1 |
| diskette | /dev/rdiskette |
| diskette0 | /dev/rdiskette0 |
| diskette1 | /dev/rdiskette1 |
| rdiskette | /dev/rdiskette |
| rdiskette0 | /dev/rdiskette0 |
| rdiskette1 | /dev/rdiskette1 |
| floppy | /dev/rdiskette |
| floppy0 | /dev/rdiskette0 |
| floppy1 | /dev/rdiskette1 |
The list above can be reproduced with the -n option.
Do not physically eject media from a device which contains
mounted file systems. eject automatically searches for any
mounted file systems which reside on the device and attempts
to umount them prior to ejecting the media (see mount(1M)).
If the unmount operation fails, eject prints a warning mes-
sage and exits. The -f option may be used to specify an
eject even if the device contains mounted partitions; this
option works only if Volume Management is not running.
eject can also display its default device and a list of
If you have inserted a floppy diskette, you must use vol-
check(1) before ejecting the media to inform Volume Manage-
ment of the floppy's presence.
The following options are supported:
-d Displays the name of the default device to be ejected.
-f Forces the device to eject even if it is busy, if
Volume Management is not running.
-n Displays the nickname to device name translation
-p Does not try to call the eject_popup program.
-q Queries to see if the media is present.
The following operands are supported:
Specifies which device to eject, by the name it
appears in the directory /dev.
Specifies which device to eject, by its nickname as
known to this command.
Example 1: Ejecting a CD while Volume Management is running
To eject a CD from its drive, while Volume Management is
running (assuming only one CD-ROM drive):
example> eject cdrom0
Example 2: Ejecting a CD-ROM without running Volume Manage-
To eject a CD-ROM drive with pathname /dev/dsk/c0t3d0s2,
without Volume Management running:
example> eject /dev/dsk/c0t3d0s2
Example 3: Ejecting a floppy disk
To eject a floppy disk (whether or not Volume Management is
example> eject floppy0
The following exit codes are returned:
0 The operation was successful or, with the -q option,
the media is in the drive.
1 The operation was unsuccessful or, with the -q
option, the media is not in the drive.
2 Invalid options were specified.
3 An ioctl() request failed.
4 Manually ejectable media is now okay to remove.
default diskette file
default CD-ROM file (deprecated)
default CD-ROM file
popup used for manually ejected media
See attributes(5) for descriptions of the following attri-
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Availability | SUNWcsu |
volcancel(1), volcheck(1), volmissing(1), mount(1M),
rmmount(1M), vold(1M), ioctl(2), rmmount.conf(4),
vold.conf(4), attributes(5), volfs(7FS)
A short help message is printed if an unknown option is
specified. A diagnostic is printed if the device name cannot
be opened or does not support eject.
An attempt was made to eject a device that has a
mounted file system. A warning message is printed when
doing a forced eject of a mounted device.
There should be a way to change the default on a per-user
If Volume Management is not running, it is possible to eject
a volume that is currently mounted (see mount(1M)). For
example, if you have a CD-ROM drive at /dev/dsk/c0t3d0s2
mounted on /mnt, the following command (without Volume
Management running) will work:
example> eject /dev/dsk/c0t3d0s0
since both slices s0 and s2 reference the whole CD-ROM
Man(1) output converted with