Dec 122017
 
For a given sector or cluster, shows which file occupies it.
File FAT109.ZIP from The Programmer’s Corner in
Category HD Utilities
For a given sector or cluster, shows which file occupies it.
File Name File Size Zip Size Zip Type
FAT.DOC 8908 3011 deflated
FAT.EXE 16657 9960 deflated
TPCREAD.ME 199 165 deflated

Download File FAT109.ZIP Here

Contents of the FAT.DOC file



FAT 1.09
---------

FAT is a simple program that can be used to display the chain of
clusters (disk allocation units) that belong to a disk file, to
determine which file "owns" a specified cluster or sector,
and to display general information about a disk.

FAT is a passive program; that is, it does not perform any
functions that alter disk data. It is an inquiry program only.

NOTE: like CHKDSK, FAT may change the default drive and/or
directory while it is working. If the program is interrupted,
no harm will be done, but you may find that your drive/directory
has been changed.

Versions 1.08 and 1.09 correct problems with large disk
partitions under DOS 4.0. I think we've finally got it right
this time.

Syntax summary
--------------

fat filespec [/D] [/H] [/I] (display chain)

fat [d:] /Cn [/D] [/H] [/I] (owner of cluster n)
fat [d:] /Sn [/D] [/H] [/I] (owner of sector n)
fat [d:] /I (disk info only)

Switches:

/C Cluster owner
/D Decimal output
/H Hex output
/I info
/S Sector owner

The commands are detailed below.


Displaying the cluster chain for a file or directory
----------------------------------------------------

The syntax for this function is:

fat [d:]path
fat [d:][path]file

If only a path (and optional drive) is present, the chain of
clusters belonging to the subdirectory file itself is displayed.
If a filename is present, the chain of clusters belonging to the
named file is displayed. The filename may contain wildcards, in
which case the chain for all matching files will be displayed.

Examples:

fat c:\dir ; Display chain for c:\dir itself,
; i.e., which clusters does the
; subdirectory file occupy.

fat c:\dir\file1.txt ; Display chain for file1.txt

fat c:\dir\*.* ; Display chain for all files
; in c:\dir

FAT interprets missing portions of the filename to be equivalent
to "*". Thus:

fat * == fat *.*
fat foo == fat foo.*
fat foo* == fat foo*.*

If you wish to display the chain for file "foo", but not
"foo.txt", use an explicit ".", as in:

fat foo.


Finding the owner of a cluster or sector
----------------------------------------

The syntax for this function is:

fat [d:] /Cn ; Find owner of cluster N
fat [d:] /Sn ; Find owner of sector N

For example:

fat /C160 ; Find owner of cluster 160

fat b: /C112H ; Find owner of cluster 112H
; on drive B.

fat /S14D ; Find owner of sector 014DH

See below for more information on how the input numbers are
interpreted (as decimal or hex).


Disk information
----------------

You can append /I (Info) to any FAT command to display general
information about the selected disk. You can also run FAT with
only a /I parameter (and optional drive) to just display the
information.

Examples:

fat /I ; Info about default drive
fat B: /I ; Info about drive B
fat c:\foo/i ; Chain for foo, plus info
fat /i /c166 ; Owner of cluster 166H, plus info


Input radix
-----------

Cluster and sector numbers for the /C and /S parameters are
assumed to be decimal, unless the numbers contain a hex digit
(A-F) or are suffixed with an 'H':

/c119 ; decimal
/s11A ; hex
/c116H ; hex


Output radix
------------

The output radix defaults to the input radix; that is, if your
sector or cluster is input in decimal, the output will be
displayed in decimal. Where there is no numeric input (for
example, "fat c:*.*"), decimal is assumed.

You can specify an explicit output radix by using the /H (hex)
or /D (decimal) switches:

fat /c116 /h ; Input decimal, output hex
fat /s12A /d ; Input hex, output decimal
fat c:*.sys ; No input, output decimal
fat c:*.sys /h ; No input, output hex

Output radix has no effect on the /Info display, which is mostly
decimal.


Media types warning
-------------------

FAT knows about certain media types (360K, 1.44M, fixed disks,
etc.). If FAT encounters a type about which it knows nothing,
it will continue to run but display a warning. If this warning
is displayed, the results may or may not be accurate (and in
fact, the program may or may not run to completion!). If the
results appear to be reasonable, they are probably accurate.

Versions prior to 1.06 would simply cancel when an unknown type
was encountered.


Revision history
----------------
Version 1.09 - 01/16/90
Still fixing problems with large partitions

Version 1.08 - 01/08/90
Corrected some problems with large partitions

Version 1.07 - 12/18/89
Support for large partitions under DOS 4.0

Version 1.06 - 8/3/89
Support for media type F0
Allowed program to proceed with unknown media types

Version 1.05 - 6/13/88
Converted to Microsoft C
Fixed a problem with subdirectory names containing '.'

Versions 1.03/1.04 - 1/21/87 and 7/15/87
Fixed a few problems with 16-bit FATs

Version 1.02 - 9/13/86
First public release


Copyright/License/Warranty
--------------------------

This document and the program file FAT.EXE ("the software") are
copyrighted by the author. The copyright owner hereby licenses
you to: use the software; make as many copies of the program and
documentation as you wish; give such copies to anyone; and
distribute the software and documentation via electronic means.
There is no charge for any of the above.

However, you are specifically prohibited from charging, or
requesting donations, for any such copies, however made; and
from distributing the software and/or documentation with
commercial products without prior permission. An exception is
granted to not-for-profit user's groups, which are authorized to
charge a small fee (not to exceed $7) for materials, handling,
postage, and general overhead. NO FOR-PROFIT ORGANIZATION IS
AUTHORIZED TO CHARGE ANY AMOUNT FOR DISTRIBUTION OF COPIES OF
THE SOFTWARE OR DOCUMENTATION, OR TO INCLUDE COPIES OF THE
SOFTWARE OR DOCUMENTATION WITH SALES OF THEIR OWN PRODUCTS.

THIS INCLUDES A SPECIFIC PROHIBITION AGAINST FOR-PROFIT
ORGANIZATIONS DISTRIBUTING THE SOFTWARE, EITHER ALONE OR WITH
OTHER SOFTWARE, AND CHARGING A "HANDLING" OR "MATERIALS" FEE OR
ANY OTHER SUCH FEE FOR THE DISTRIBUTION. NO FOR-PROFIT
ORGANIZATION IS AUTHORIZED TO INCLUDE THE SOFTWARE ON ANY MEDIA
FOR WHICH MONEY IS CHARGED. PERIOD.

There is no restriction on the use of this software in
commercial or institutional environments.


No copy of the software may be distributed or given away without
this document; and this notice must not be removed.

There is no warranty of any kind, and the copyright owner is not
liable for damages of any kind. By using this free software,
you agree to this.

The software and documentation are:

Copyright (C) 1986, 1987, 1988, 1989, 1990 by
Christopher J. Dunford
The Cove Software Group
P.O. Box 1072
Columbia, Maryland 21044

(301) 992-9371
CompuServe 76703,2002 [IBMNET]


 December 12, 2017  Add comments

Leave a Reply