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mount(8)		    System Manager's Manual		      mount(8)

       mount, umount - mount or	unmount	file systems

       /etc/mount [ options ] [	device ] [ directory ]

       /etc/umount [ options ] [ device	] [ directory ]

       This  is	a general description of the command.  Additional descriptions
       are provided to define the syntax and options for the NFS and UFS  file

       Each invocation of the command announces	to the system that a file sys-
       tem is present on the device device.  The file system may be  local  or
       remote.	File directory must exist as a directory file.	It becomes the
       name of the newly mounted file system root.

       If invoked without arguments, prints the	list of	mounted	file systems.

       Physically write-protected disks	and magnetic tape file systems must be
       mounted read-only or an error will occur	at mount time.

       General	users  can  only mount file systems with certain restrictions.
       For example, the	user, other than the superuser,	performing  the	 mount
       must own	the directory directory.  Furthermore, no users	other than the
       superuser can execute or	programs on the	mounted	file systems.  In  ad-
       dition,	users  other than the superuser	cannot access block or special
       character devices such as on the	mounted	file systems.

       The command announces to	the system that	the removable file system pre-
       viously	mounted	on the specified directory is to be removed.  Only the
       person who mounted a particular file system or the  superuser  can  un-
       mount the file system again.

       -a	   Reads  the  file  and mounts, or unmounts, all file systems
		   listed there.

       -f	   Fast	unmount.  The option has no  meaning  for  local  file
		   systems  and	 directories.  However,	for remote file	system
		   types (such as NFS),	the option causes the  client  to  un-
		   mount  the  remotely	 mounted  file systems and directories
		   without notifying the server.  This can avoid the delay  of
		   waiting for acknowledgment from a server that is down.

       -o options  Specifies a string that is passed to	the kernel and used by
		   the specific	file system's mount  routine  in  the  kernel.
		   For specific	options, refer to the file system-specific de-
		   scription, such as

       -r	   Indicates that the file system is to	be mounted read	 only.
		   To  share a disk, each host must mount the file system with
		   the -r option.

       -t type	   Specifies the type of file system is	being  mounted.	  When
		   used	with the option, the option mounts all file systems of
		   the given type found	in the file.  For specific file	system
		   types,  refer to the	file system-specific description, such

       -v	   Tells what did or did not happen.  (Verbose flag)

       The options for are:

       -a	   Unmounts all	mounted	file systems.  It may be necessary  to
		   execute  twice to accomplish	unmounting of all mounted file

       -v	   Tells what did or did not happen.  (Verbose flag)

       Mounting	corrupted file systems will crash the system.

       File systems information	table

See Also
       getmnt(2), mount(2), fstab(5), fsck(8), mount(8nfs), mount(8ufs)


Name | Syntax | Description | Options | Restrictions | Files | See Also

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