prtvtoc(1M)               UNIX System V(Base System)                prtvtoc(1M)


      prtvtoc - disk information display utility

SYNOPSIS
      prtvtoc [-aep] [-f vtoc-file] raw-device

DESCRIPTION
      The default and primary function of prtvtoc is to display the contents of
      the VTOC (Volume Table Of Contents).  The information displayed for each
      valid slice includes slice number, slice tag, slice flag/permissions,
      slice start sector, slice size (in sectors).

      When editing the VTOC, the following entries are the valid slice tags and
      slice permission flags.
             Slice Tags
             __________________________________________________________
             #define VBOOT     0x01    /* Boot slice */
             #define VROOT     0x02    /* Root filesystem */
             #define VSWAP     0x03    /* Swap filesystem */
             #define VUSR      0x04    /* Usr filesystem */
             #define VBACKUP   0x05    /* full disk */
             #define VALTS     0x06    /* alternate sector space */
             #define VOTHER    0x07    /* non-unix space */
             #define VALTTRK   0x08    /* alternate track space */
             #define VSTAND    0x09    /* Stand slice */
             #define VVAR      0x0a    /* Var slice */
             #define VHOME     0x0b    /* Home slice */
             #define VDUMP     0x0c    /* dump slice */

             Slice Permission Flags
             __________________________________________________________
             #define VUNMNT    0x01    /* Unmountable partition */
             #define VRONLY    0x10    /* Read only */
             #define VVALID    0x200   /* Partition is valid to use */
      The start and size value are in absolute sector numbers where the first
      sector on the drive is 0 (which is reserved for the partition table).
      Slices should start and end on a cylinder boundary if possible.  The
      head, cylinder and sectors/track information provided by prtvtoc -p will
      assist in the calculations.  Slices should not overlap (slice 0 is the
      exception, it describes the entire UNIX partition).

OPTIONS
      -a    prints the alternates tables (bad tracks and bad sectors).

      -e    creates or adds information to the /etc/partitions file.  This
            option is provided to allow support for mkpart[see mkpart(1M)].
            Dependence on this feature is not suggested since it will not be
            supported in a future release.

      -p    prints the information contained in the pdinfo structure.





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prtvtoc(1M)               UNIX System V(Base System)                prtvtoc(1M)


      -f vtoc-file
            writes the current contents of the VTOC into the vtoc-file in a
            codensed format.  The format of the file is slice number, slice tag
            value, slice flag value, slice start sector, slice size (in
            sectors).  The purpose of this file is to be input for the edvtoc
            command.

      raw-device
            raw-device is the character special device for the disk drive to be
            accessed.  It must be the slice 0 device to represent the entire
            device (e.g., /dev/rdsk/0s0 or /dev/rdsk/c0t0d0s0).

FILES
      /dev/dsk/0s0
      /dev/rdsk/1s0
      /dev/rdsk/c?t?d?s0

SEE ALSO
      edvtoc(1M)



































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