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mount(1M)

HP-UX 11i Version 3: February 2007
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NAME

mount, umount — mount and unmount file systems

SYNOPSIS

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

/usr/sbin/mount -a [-F FStype] [-eQ]

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

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

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

/usr/sbin/umount -a [-f] [-F FStype] [-h host] [-v]

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)

The mount command 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 the -F option is specified, all file systems in /etc/fstab with that FStype 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 the standard output indicating which file system is being mounted.

-F FStype

Specify FStype, the file system type on which to operate. See fstyp(1M). If this option is not included on the command line, then it is determined from either /etc/fstab, by matching special with an entry in that file, or from file system statistics of special, obtained by statfsdev() (see statfsdev(3C)).

-h

Unmount only those file systems listed in /etc/mnttab that are remote-mounted from host.

-l

Limit actions to local file systems only.

-o specific_options

Specify options specific to each file system type. specific_options is a list of comma separated suboptions and/or keyword/attribute pairs intended for a FStype-specific version of the command. See the FStype-specific manual entries for a description of the specific_options supported, if any.

-p

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

-Q

Prevent the display of error messages that result from an attempt to mount already mounted file systems.

-r

Mount the specified file system as read-only. 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, the directory and special fields are reversed.

-V

Echo the completed command line, but perform 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)

The umount command recognizes the following options:

-a

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

-f

Forced unmount. A forced unmount is one which will occur regardless of activity on the file system. Not supported by all file system types. See file system type specific man pages for more information. If the file system type man page does not mention forced unmount, then it is not supported for that file system type.

-F FStype

Specify FStype, the file system type on which to operate. If this option is not included on the command line, then it is determined from /etc/mnttab by matching special with an entry in that file. If no match is found, the command fails.

-v

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

-V

Echo the completed command line, but perform 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.

EXAMPLES

List the file systems currently mounted:

mount

Mount the HFS file system /dev/disk/disk0 at directory /home:

mount -F hfs /dev/disk/disk0 /home

Unmount the same file system:

umount /dev/disk/disk0

WARNINGS

If you receive a message that says "Can't send after socket shutdown", contact your system administrator to make sure the fsdaemon is running properly.

AUTHOR

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

FILES

/etc/fstab

Static information about the systems

/etc/mnttab

Mounted file system table

STANDARDS CONFORMANCE

mount: SVID3

umount: SVID3

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