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The 640 Meg Shareware Studio CD-ROM Volume II (Data Express)(1993).ISO
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PATCH401.DOC
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1992-06-08
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JP Software
4DOS 4.0 ==> 4.01 Patch Documentation
Version 4.01 -- June 8, 1992
Copyright 1988 - 1992, JP Software Inc., All Rights Reserved. Published
by JP Software Inc., P.O. Box 1470, E. Arlington, MA 02174 USA, (617)
646-3975.
This file explains how the 4DOS 4.01 patch update works and how to
install it.
The patch update converts your current registered copy of 4DOS 4.0 to
version 4.01. JP Software uses the RTPatch software update package from
PocketSoft Inc. to generate "patches" which contain all of the
differences between the version 4.0 and 4.01 files. You then apply
these patches to your copy of 4DOS 4.0 to upgrade it to version 4.01.
The patches and patching program together are about 50% smaller than the
actual version 4.01 files, so they take only about half as long to
download, and can be distributed on a single disk if necessary.
The patch is designed for registered users who want to update from
version 4.0 to version 4.01, and who have version 4.0 files dated
November 18, 1991. The patch process retains your branding information,
so your new copy of 4DOS will still be branded properly (whether
shareware or registered).
[The patch will be partially successful with version 4.0 shareware files
dated 11-18-91. Some of the version 4.0 shareware documentation files
will not be updated, because the patch process only updates the files
included with the registered version. This may cause difficulty because
the README.DOC file is different in the shareware version. It therefore
will not be patched, and you will not have access to the new README
file, which explains (among other things) how to install version 4.01.
In this situation you will have to rely on the similar version 4.0
installation instructions in the older README.DOC file.]
The patch consists of three files:
PATCH.EXE The patching program.
PATCH401.RTP The actual patch data (data for all 4DOS
files to be patched is included in this
single file).
PATCH401.DOC This file.
To convert your copy of 4DOS 4.0 to version 4.01, use the following
procedure:
(1) To avoid patching your working copy of 4DOS, copy all of your
version 4.0 files to a new disk or directory (we suggest the
directory name \4DOS401). This probably is not necessary, as the
patch process has a number of built-in safeguards in case of any
difficulty. However we feel it is still best to be prudent,
because 4DOS is used when your computer boots and any problems in
patching it could leave you without a bootable system. Be sure
that you copy the README.DOC file, or PATCH will not be able to
create the new README.DOC which contains installation
instructions for version 4.01.
(2) Copy the PATCH.EXE and PATCH401.RTP files to the new
directory.
(3) Change to the new directory.
(4) Enter the command:
PATCH PATCH401
(5) The PATCH program will give a sign-on message, then begin the
patching process. As each file is patched it is verified. PATCH
will display messages during the patching process and a summary
at the end. To check the patched and unpatched files, use the
4DOS command:
dir /ot/p
This displays the directory sorted by date and time, and pauses
at the end of each screen. Any unpatched version 4.0 files will
be dated 11-18-91 at 4:00; patched version 4.01 files will be
dated 06-08-91 at 4:01. The UPDATE40.DOC file will not be
patched; this is normal. Three new files which did not exist in
4DOS 4.0 will be created: ORDERINF.DOC, UPDAT401.DOC and
ASCTAB.TXT. Also, three files are the same as in version 4.0 and
will have only their date and time changed; these are ALIASES,
TOUR1.BTM, and TOUR2.BTM.
(6) Look through the installation instructions in the new
README.DOC, and modify your CONFIG.SYS and other startup files to
use the new version of 4DOS.
(7) Once you have version 4.01 up and running you can delete your
old version 4.0 files if you like.
There are a few additional things you should be aware of when running
PATCH:
** If your version 4.0 4DOS.COM file has been compressed with
PKLITE, DIET, or a similar program, PATCH will not update it.
** Similarly, if you have edited or modified any other 4DOS files in
any way (other than BRANDing 4DOS), PATCH will not update them.
Only the original, unmodified files from the November 18, 1991
version of 4DOS can be patched.
** PATCH will ignore missing files, so if you copy only some of your
4DOS 4.0 files to the new directory, only those files will be
updated. You can copy additional files later and rerun the PATCH
command to update them; this may cause some harmless error
messages when PATCH finds some of the files have already been
patched.