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 mount_hfs(1M)						       mount_hfs(1M)




 NAME
      mount, umount - mount and unmount an HFS file systems

 SYNOPSIS
      /usr/sbin/mount [-l] [-p|-v]

      /usr/sbin/mount -a [-F hfs] [-eQ] [-f]

      /usr/sbin/mount [-F hfs] [-eQrV] [-f] [-o specific_options]
	   {special|directory}

      /usr/sbin/mount [-F hfs] [-eQrV] [-f] [-o specific_options]
	   special directory

      /usr/sbin/umount -a [-F hfs] [-v]

      /usr/sbin/umount [-v] [-V] {special|directory}

 DESCRIPTION
      The mount command mounts file systems.  Only a superuser can mount
      file systems.  Other users can use mount to list mounted file systems.

      The mount command attaches special, a removable file system, to
      directory, a directory on the file tree.	directory, which must
      already exist, will become the name of the root of the newly mounted
      file system.  special and directory must be given as absolute path
      names.  If either special or directory is omitted, mount attempts to
      determine the missing value from an entry in the /etc/fstab file.
      mount can be invoked on any removable file system, except /.

      If mount is invoked without any arguments, it lists all of the mounted
      file systems from the file system mount table, /etc/mnttab.

      The umount command unmounts mounted file systems.	 Only a superuser
      can unmount file systems.

    Options (mount)
      mount recognizes the following options:

	   -a		  Attempt to mount all file systems described in
			  /etc/fstab.  All optional fields in /etc/fstab
			  must be included and supported.  If -F hfs is
			  specified, all HFS file systems in /etc/fstab are
			  mounted.  If noauto is specified in an entry's
			  option list, this entry is skipped.  File systems
			  are not necessarily mounted in the order listed in
			  /etc/fstab.

	   -e		  Verbose mode.	 Write a message to standard output
			  indicating which file system is being mounted.




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	   -f		  Force the file system to be mounted, even if the
			  file system clean flag indicates that the file
			  system should have fsck run on it before mounting
			  (see fsck(1M)).  This option is valid only on HFS
			  file systems.

	   -F hfs	  Specify the HFS file system type (see fstyp(1M)).

	   -l		  Limit actions to local file systems only.

	   -o specific_options
			  Specify options specific to the HFS file system
			  type.	 specific_options is a list of comma
			  separated suboptions and/or keyword/attribute
			  pairs intended for the HFS specific module of the
			  command.

			  The following specific_options are valid on HFS
			  file systems.

			  defaults	 Use all default options.  When
					 given, this must be the only option
					 specified.

			  rw		 Mount read-write (default).

			  ro		 Mount read-only.

			  suid		 Allow set-user-ID execution
					 (default).

			  nosuid	 Do not allow set-user-ID execution.

			  behind	 Enable, where possible,
					 asynchronous writes to disk.  This
					 is the default on 700 systems.

			  delayed	 Enable delayed or buffered writes
					 to disk.  This is the default on
					 800 systems.

			  fs_async	 Enable relaxed posting of file
					 system metadata.

			  no_fs_async	 Enable rigorous posting of file
					 system metadata.  This is the
					 default.

			  largefiles	 Attempt to enable the creation of
					 files greater than 2 gigabytes in
					 size.	File systems have to be



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					 created or configured to enable
					 large files (see mkfs_hfs(1M) and
					 fsadm_hfs(1M)).

			  nolargefiles	 Attempt to disable the creation of
					 files greater than 2 gigabytes in
					 size.	File systems have to be
					 created or configured to disable
					 large files. (see mkfs_hfs(1M) and
					 fsadm_hfs(1M)).

			  quota		 Enable disk quotas (valid only for
					 rw file systems).

			  noquota	 Disable disk quotas (default).

			  Mounting with the quota option also enables quotas
			  for the file system, unlike some other systems,
			  which require the additional invocation of the
			  quotaon command after the file system has been
			  mounted (see quotaon(1M)).  Running quotaon does
			  no harm, but it is not necessary.

	   -p		  Report the list of mounted file systems in the
			  /etc/fstab format.

	   -Q		  Prevent the display of error messages resulting
			  from an attempt to mount already mounted file
			  systems.

	   -r		  Mount the specified file system as read-only.
			  This option is equivalent to the -o ro
			  specific_option.  Physically write-protected file
			  systems must be mounted in this way or errors
			  occur when access times are updated, whether or
			  not any explicit write is attempted.

	   -v		  Report the regular output with file system type
			  and flags; however, directory and special fields
			  are reversed.

	   -V		  Echo the completed command line, but performs no
			  other action.	 The command line is generated by
			  incorporating the user-specified options and other
			  information derived from /etc/fstab.	This option
			  allows the user to verify the command line.

    Options (umount)
      umount recognizes the following options:





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		     -a		    Attempt to unmount all file systems
				    described in /etc/mnttab.  All optional
				    fields in /etc/mnttab must be included
				    and supported.  If -F hfs is specified,
				    all HFS file systems in /etc/mnttab are
				    unmounted.	File systems are not
				    necessarily unmounted in the order
				    listed in /etc/mnttab.

		     -F hfs	    Specify the HFS file system type (see
				    fstyp(1M)).

		     -v		    Verbose mode.  Write a message to
				    standard output indicating which file
				    system is being unmounted.

		     -V		    Echo the completed command line, but
				    performs no other action.  The command
				    line is generated by incorporating the
				    user-specified options and other
				    information derived from /etc/fstab.
				    This option allows the user to verify
				    the command line.

 DIAGNOSTICS
      umount complains if the special file is not mounted or if it is busy.
      The file system is busy if it contains an open file or some logged-in
      user's working directory.

 EXAMPLES
      Mount a local HFS disk:

	   mount -F hfs /dev/dsk/c0t0d4 /usr

      Unmount a local HFS disk:

	   umount /dev/dsk/c0t0d4

 WARNINGS
      Some degree of validation is done on the file system, however, it is
      generally unwise to mount file systems that are defective, corrupt, or
      of unknown origin.

 AUTHOR
      mount was developed by HP, AT&T, the University of California,
      Berkeley, and Sun Microsystems.

 FILES
      /etc/fstab	  Static information about the file systems
      /etc/mnttab	  Mounted file system table




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 mount_hfs(1M)						       mount_hfs(1M)




 SEE ALSO
      fsclean(1M), mount(1M), mkfs_hfs(1M), fsadm_hfs(1M), quotaon(1M),
      mount(2), fstab(4), mnttab(4), fs_wrapper(5), quota(5).

 STANDARDS CONFORMANCE
      mount: SVID3

      umount: SVID3














































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