MOUNT(1M)                DOMAIN/IX SYS5                 MOUNT(1M)



NAME
     mount, umount - mount and dismount file system

USAGE
     /etc/mount [ special directory [ -r ] ]

     /etc/umount special

DESCRIPTION
     The mount program announces to the system that a removable
     file system is present on the device special.  The directory
     must not exist; it is created by a successful mount of the
     file system and becomes the root name of the newly-mounted
     file system.

     The mount and umount commands maintain a table of mounted
     devices.  If invoked with no arguments, mount prints the
     table.

     The -r option to mount indicates that the file is to be
     mounted read-only.  Physically write-protected and magnetic
     tape file systems must be mounted in this way or errors will
     occur when access times are updated, whether or not any
     explicit write is attempted.

     The umount command announces to the system that the remov-
     able file system previously mounted on device special is to
     be removed and the directory name deleted.

     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.)

CAUTIONS
     Some degree of validation is done on the file system; how-
     ever, you should not try to mount file systems that contain
     unreadable or otherwise invalid data.

FILES
     /etc/mnttab    mount table (link to `node_data/etc.mnttab)

DIAGNOSTICS
     The mount command issues a warning if the file system to be
     mounted is currently mounted under another name.





Printed 12/4/86                                           MOUNT-1

MOUNT(1M)                DOMAIN/IX SYS5                 MOUNT(1M)



     The umount command complains if the special file is not
     mounted or if it is busy.  The file system is busy if it
     contains an open file.

RELATED INFORMATION
     mkdisk(1M)
     setmnt(1M)
     mount(2)
     mnttab(4)












































MOUNT-2                                           Printed 12/4/86