Sun Microsystems Sun Workstation 100U System Manager's Manual page 211

MOUNT(8)
MAINTENANCE COMMANDS MOUNT(8)
NAME
mount, umount - mount and dismount file system
SYNOPSIS
Jete/mount ( -a )
(-I' ) (
-t
I [
-y ) [ special) ( dir)
/ete/umount [ -a ] [ -y ) [ dev . .• )
DESCRIPTION
Mount announces to the system that a removable file system is present on the device special. The
file dir must exist already and it must be a directory (unless the root oC the mounted file system is
not a directory). It becomes the name oC the newly mounted root. The optional argument
-I'
indicates that the file system is to be mounted read-only.
Umount announces to the system that the removable file system previously mounted on device
special should
be removed.
Mount and umount maintain a table oC mounted devices in / etc/ mtab. It invoked without an
argument, mount displays the table.
Physically write-protected and magnetic tape file systems must be mounted read-only or errors
will occur when access times are updated, whether or not any explicit write is attempted.
MOUNT OPTIONS
-I'
Mount the specified file system read-only.
-a Attempt to mount or unmount all the file systems described in / etc/ /stab. In this case,
special and dir are taken Crom / etc//stab. The special file name Crom / etc//stab is the
block special name.
-y
Verbose - mount displays a message indicating the file system being mounted.
-t Fake a new / etc/mtab entry. Mount does not actually mount any file systems.
UMOUNT OPTIONS
FILES
-a
Attempt to unmount all the file systems described in
I
etcl/stab. In this case, special is
taken Crom
I
etcllstab. '
-v
Verbose - umount displays a message indicating the file system being unmounted.
/etc/mtab
letclCstab
mount table
file system table
SEE ALSO
mount(2}, mtab(5}, Cstab(5}
BUGS
Mounting file systems rull or garbage will crash the system.
Mounting a root directory on a non-directory makes some apparently good path names invalid.
56 Last change: 3 January 1984
Sun Release 1.1