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 file name must not already exist. Name becomes the name of the newly-mounted root. 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.mtab)
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.