eject(1) User Commands eject(1)
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, depending on whether or not Volume
Management is running.
With Volume Management
When eject is used on media that can only be ejected manually, it will
do everything except remove the media, including 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 sup-
plied instead of a pathname, eject will recognize the following list:
tab() box; cw(2.750000i)| cw(2.750000i) lw(2.750000i)| lw(2.750000i).
NicknamePath fd/dev/rdiskette fd0/dev/rdiskette fd1/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 eject-
ing the media (see mount(1M)). If the unmount operation fails, eject
prints a warning message and exits. The -f option may be used to spec-
ify 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 nicknames.
If you have inserted a floppy diskette, you must use volcheck(1) before
ejecting the media to inform Volume Management of the floppy's pres-
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 Man-
agement is not running.
-n Displays the nickname to device name translation table.
-p Does not try to call the eject_popup program.
-q Queries to see if the media is present.
The following operands are supported:
device Specifies which device to eject, by the name it appears
in the directory /dev.
nickname 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 Management
To eject a CD-ROM drive with pathname /dev/dsk/c0t3d0s2, without Vol-
ume Management running:
example> eject /dev/dsk/c0t3d0s2
Example 3: Ejecting a floppy disk
To eject a floppy disk (whether or not Volume Management is running):
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.
/dev/diskette0 default diskette file
/dev/sr0 default CD-ROM file (deprecated)
/dev/dsk/c0t6d0s2 default CD-ROM file
/usr/lib/vold/eject_popup popup used for manually ejected media
See attributes(5) for descriptions of the following attributes:
tab() allbox; cw(2.750000i)| cw(2.750000i) lw(2.750000i)|
lw(2.750000i). ATTRIBUTE TYPEATTRIBUTE VALUE AvailabilitySUNWcsu
volcancel(1), volcheck(1), volmissing(1), mount(1M), rmmount(1M),
vold(1M), ioctl(2), rmmount.conf(4), vold.conf(4), attributes(5),
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
Device Busy 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 basis.
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 com-
mand (without Volume Management running) will work:
example> eject /dev/dsk/c0t3d0s0
since both slices s0 and s2 reference the whole CD-ROM drive.
SunOS 5.10 20 Sep 1996 eject(1)