MOUNT(8)
NAME
mount, umount − mount and dismount file system
USAGE
/etc/mount [ special name [ −r ] ]
/etc/mount −a
/etc/umount special
/etc/umount −a
DESCRIPTION
The mount command announces to the system that a removable file system is present on the device special. The name becomes the name of the newly-mounted root. Name must not already exist. The umount command announces to the system that the removable file system previously mounted on device special is to be removed.
Both mount and umount maintain a table of mounted devices in /etc/mtab. On DOMAIN systems, this table is a link to ‘node_data/etc.mtab. If invoked without an argument, mount prints the table.
Before you can successfully mount a file system onto a disk, the disk’s volume must be initialized. This is accomplished by executing /com/invol on the disk. If the disk’s volume has already been initialized, you need not repeat the /com/invol execution. (Type /com/help invol at the Bourne or C Shell prompt to receive more information about this command.)
OPTIONS
−a Attempt to mount (unmount) all of the file systems described in /etc/fstab. In this case, special and name are taken from /etc/fstab. The special filename from /etc/fstab is the block special name. (This option applies to both mount and umount.)
−r Mount the file system as read-only. (This option applies to mount only.)
FILES
/etc/mtab mount table (link to ‘node_data/etc.mtab)
/etc/fstab file system table (link to ‘node_data/etc.fstab)
CAUTIONS
Physically write-protected filesystems, as well as those on magnetic tape, must be mounted read-only. If they are not, errors will occur when access times are updated, whether or not any explicit write is attempted.
If you mount a filesystem that contains unreadable or otherwise invalid data, unpredictable things will happen.