Add_disk(1)                                                        Add_disk(1)


NAME
     Add_disk - add an optional disk to the system

SYNOPSIS
     Add_disk [ controller_number ] [ disk_number ] [ lun_number ]

DESCRIPTION
     Add_disk enables you to add an extra SCSI disk to a system if the disk is
     on an integral SCSI controller (i.e., it can not be used for disks
     attached to VME SCSI controllers).

     The disk_number option must be specified if you are not adding the
     default ID of 2; similarly the controller and lun must be specified if
     other than 0.

     The Add_disk command creates the required directory, makes the
     appropriate device file links, makes a new filesystem, does the required
     mount operation, and adds the appropriate entry to /etc/fstab.

     Appropriate checks are made for filesystems already existing on the
     common partitions (0, 6, and 7).  If they are present, you are asked if
     you want to proceed before a filesystem is made.  If the answer is no,
     Add_disk exits.

NOTE
     Older versions of this command worked only with controller 0, and used a
     default mount point of /disk#, where # was the SCSI ID.  This version
     uses /disk##, where the first # is the controller and the second is the
     SCSI ID.

     Add_disk is a shell script and can be used as a template to determine
     what is necessary.  The volume header on the disk must already have been
     initialized with the fx(1M) program.

     In the event that the mount point for the new disk has permissions which
     may interfere with normal use, Add_disk may issue a warning regarding a
     too restrictive umask value or insufficient permissions on an existing
     mount point.  Usually, a mount point directory should have execute
     permissions set for user, group and others.  Without these permissions
     set, a user may be denied permission to access the parent directory of
     the mount point after the disk is mounted.

SEE ALSO
     chmod(1), umask(1), fx(1M), mkfs(1M), fstab(4).


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