fdisk man page on Xenix

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     FDISK(C)		      XENIX System V		      FDISK(C)

     Name
	  fdisk - Maintain disk partitions.

     Syntax
	  fdisk [[-p] [-ad partition] [-c partition start size] [-
	  f devicename]]

     Description
	  fdisk displays information about disk partitions.  fdisk
	  also creates and deletes disk partitions and changes the
	  active partition.  fdisk functionality is a superset of the
	  MS-DOS command of the same name.  fdisk is usually used
	  interactively from a menu.

	  The hard disk has at most four partitions.  Only one
	  partition is active at any given time.  It is possible to
	  assign a different operating system to each partition.  Once
	  a partition is made active, the operating system resident in
	  that partition boots automatically once the current
	  operating system is halted.

	  To use , at least one partition must be assigned to .

	  The fdisk utility does not allocate the first track or the
	  last cylinder on the hard disk when the ``Use Entire Disk
	  for XENIX'' option is used.  The ``Use Entire Disk for
	  XENIX'' option always leaves the first track unassigned, but
	  allows you to allocate the last cylinder on the hard disk.
	  The first track on the hard disk is reserved for masterboot
	  and the last cylinder is generally used when running hard
	  disk diagnostics. You should not allocate the last cylinder
	  if you plan to run diagnostics on your hard disk.

	  For example, if a disk has 2442 tracks, fdisk reports these
	  as tracks 0-2441.  If your hard disk has 4 heads, fdisk will
	  assign (using the ``Use Entire Disk for XENIX'' option)
	  tracks 1-2437.  (Track 0 is reserved for masterboot.) The
	  last cylinder (tracks 2438-2441) is not assigned with the
	  ``Use Entire Disk for XENIX'' option.

	  Partitions are defined by a ``partition table'' at the end
	  of the master boot block.  The partition table provides the
	  location and size of the partitions on the disk.  The
	  partition table also defines the active partition.  Each
	  partition can be assigned to XENIX, DOS, or some other
	  operating system.  Once a DOS partition is set up, DOS files
	  and directories resident in the DOS partition may be
	  accessed while running XENIX by means of the dos(C)
	  commands.  DOS may be booted without the DOS partition being
	  active via the ``boot:dos'' command.	See boot(HW).

     Arguments

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     FDISK(C)		      XENIX System V		      FDISK(C)

	  -p, -a, -d, -c
	       These flags are used to invoke fdisk non-interactively:

     -p			    prints out the disk partition table.
     -a number		    activates the specified partition number.
     -d number		    deletes the specified partition number.
     -c number start size   creates partition with specified start and size.

	  -f name
	       Open device name and read the partition table
	       associated with that device's partition.	 The default
	       is /dev/hd00.

     Options
	  The fdisk command displays a prompt and a menu of five
	  options.  Updates to the disk are not made until you enter
	  ``q'' from the main menu.

	  1. Display Partition Table.
	       This option displays a table of information about each
	       partition on the hard disk.  The PARTITION column gives
	       the partition number.  The STATUS column tells whether
	       the partition is active (A) or inactive (I).  TYPE
	       tells whether the partition is XENIX, DOS, or
	       ``other''.  The option also displays the starting
	       track, ending track and total number of tracks in each
	       partition.

	  2. Use Entire Disk for .
	       fdisk creates one partition that includes all the
	       tracks on the disk, except the first track and the last
	       cylinder.  This partition is assigned to	 and is
	       designated the active partition.

	  3. Create  Partition
	       This option allows the creation of a partition by
	       altering the partition table.  fdisk reports the number
	       of tracks available for each partition and the number
	       of tracks in use.  fdisk prompts for the partition to
	       create, the starting track and size in tracks.  The
	       change is written to the operating system and the hard
	       disk when you enter ``q'' from the main menu.

	  4. Activate Partition
	       This option activates the specified partition.  Only
	       one partition may be active at a time.  The change is
	       not effective until you exit.  The operating system
	       residing in the newly activated partition boots once
	       the current operating system is halted.

	  5. Delete Partition
	       This option requests which partition you wish to

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     FDISK(C)		      XENIX System V		      FDISK(C)

	       delete.	fdisk reports the new available amount of disk
	       space in tracks.	 The change is not effective until you
	       exit.

	  Exit the fdisk program by typing a `q' at the main fdisk
	  menu. Your changes are now written to the operating system
	  and the hard disk.

     Notes
	  The minimum recommended size for a XENIX partition is 5
	  megabytes.

	  Since fdisk is intended for use with DOS, it may not work
	  with all operating system combinations.

     See also
	  dos(C), hd(HW).

     Page 3					      (printed 8/7/87)

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