Re: XXCOPY & Robocopy barf on files bigger than 100 Mb

From	Steve Hayes <hayesstw@telkomsa.net>
Newsgroups	comp.os.ms-windows.misc, alt.windows7.general, comp.os.ms-windows.misc, microsoft.public.windowsxp.general, soc.genealogy.computing
Subject	Re: XXCOPY & Robocopy barf on files bigger than 100 Mb
Followup-To	comp.os.ms-windows.misc, microsoft.public.windowsxp.general, soc.genealogy.computing
Date	2023-07-29 05:56 +0200
Organization	Khanya Publications
Message-ID	<8039ci5gogvs43spfbc2h7b6vg3hhmpkih@4ax.com> (permalink)
References	<ghnn8i1a3jrmo8d8vbee3jc8f1v17llnir@4ax.com>

Cross-posted to 5 groups.

Followups directed to: comp.os.ms-windows.misc, microsoft.public.windowsxp.general, soc.genealogy.computing

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On Fri, 16 Jun 2023 06:21:27 +0200, Steve Hayes
<hayesstw@telkomsa.net> wrote:

>I use a USB flash drive to transfer my working data files between by
>dsktop computer (running Windows XP) and my laptop computer (running
>Windows 7. 
>
>I used to do most of this this using Dropbox, but Dropbox stopped
>working on Windows XP, so I've done it with a flash drive since then. 
>
>Recently, however, one of my data files, for the Rootsmagic genealogy
>program, started getting corrupted in the transfer. 
>
>This is the command I use to transfer it from the flash drive to the
>desktop computer (which runs WinXP):
>
>XXCOPY J:\Dropbox\*.* G:\Stevedoc\Dropbox\ /BN /s /y
>
>Where J: is the flash drive and G: is a hard drive on my computer. 
>
>That command is part of a batch file which I run every time I need to
>transfer the files. I use similar commands copy files to the flash
>drive. 
>
>When the Rootsmagic V7 data file reached 100 Mb, however, it started
>being corrupted. 
>
>It seems to be corrupted only when copying from the flash drive to the
>hard drive, on both computers. It does not seem to be corrupted when
>copying from the hard drive to the flash drive. When I notice it is
>corrupted, I copy it manually, using FlashCommander, and that seems to
>copy the file without corruption. 
>
>Does anyone know of any limitation of both XXCOPY and ROBOCOPY that
>would cause them to produce errors when copying files over 100 Mb?
>
>Or could the problem be in the use of the command in a batch file, so
>that the batch file tries to run the next command before the computer
>has finished copying the file to the hard drive? If so, is there way
>of delaying it until the copying is finished?

After more playing around with this, it seems that the problem may not
lie with the copying programs, but with RootsMagic itself. 

So here is a restatement of the problem:

I frequently have to copy my RM data file from my desktop computer
(running Windows XP) and my laptop computer (running Windows 7). 

A while back the file reached the size of 100 Mb, and I began to have
problems with the copying, which I do with XXCOPY on the XP machine
and Robocopy on the Win 7 machine. 

I copy the files to a USB flash drive, along with several other files,
using a batch file. But when the data file is copies from the flash
drive to the XP computer, when I try to open it, it reports that the
data file is malformed. 

When I look at it with the File Commander program (which compares
files in different directories and allows one to copy them etc) it
shows that the data file has been truncated to 100Mb on the XP
machine, but on the flash drive it is shown as the original size. I
manually copy it again, using File Commander, and then RM 6 or RM 7
opens it OK. 

At first I thought the problem was with the copying programs, but it
appears that it is not. The file is copied just fine, but the first
time I try to open it RM (6 or 7) on the XP computer it seems to
truncate it to 100Mb and then reports it as malformed. But when I
manually copy it a second time, it seems to open it correctly. 

Any suggestions about what might be causing such a problem, and how to
overcome it?

(Follow-ups reset)

-- 
Steve Hayes
Web: http://hayesgreene.wordpress.com/
     http://hayesgreene.blogspot.com
     http://groups.yahoo.com/group/afgen/

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Thread

XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-06-16 06:21 +0200
  Re: XXCOPY & Robocopy barf on files bigger than 100 Mb "David E. Ross" <nobody@nowhere.invalid> - 2023-06-15 22:40 -0700
  Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Ian Goddard <ian_ng@austonley.org.uk> - 2023-06-16 08:52 +0100
    Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-07-27 08:03 +0200
  Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Paul <nospam@needed.invalid> - 2023-06-16 06:18 -0400
    Re: XXCOPY & Robocopy barf on files bigger than 100 Mb VanguardLH <V@nguard.LH> - 2023-06-18 17:51 -0500
      Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Paul <nospam@needed.invalid> - 2023-06-19 05:17 -0400
      Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Enno Borgsteede <ennoborg@gmail.com> - 2023-06-19 15:10 +0200
        Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-07-27 08:13 +0200
          Re: XXCOPY & Robocopy barf on files bigger than 100 Mb wasbit <wasbit@nowhere.invalid> - 2023-07-27 10:35 +0100
            XXCOPY & Robocopy barf on files bigger than 100 Mb - now general syncing "J. P. Gilliver" <G6JPG@255soft.uk> - 2023-07-27 17:14 +0100
              Re: XXCOPY & Robocopy barf on files bigger than 100 Mb - now general syncing Steve Hayes <hayesstw@telkomsa.net> - 2023-07-28 08:46 +0200
                Re: XXCOPY & Robocopy barf on files bigger than 100 Mb - now general syncing Enno Borgsteede <ennoborg@gmail.com> - 2023-07-28 16:11 +0200
              Re: XXCOPY & Robocopy barf on files bigger than 100 Mb - now general syncing Enno Borgsteede <ennoborg@gmail.com> - 2023-07-28 14:06 +0200
                Re: XXCOPY & Robocopy barf on files bigger than 100 Mb - now general syncing "J. P. Gilliver" <G6JPG@255soft.uk> - 2023-07-29 03:08 +0100
                Re: XXCOPY & Robocopy barf on files bigger than 100 Mb - now general syncing Enno Borgsteede <ennoborg@gmail.com> - 2023-07-29 16:14 +0200
                Re: XXCOPY & Robocopy barf on files bigger than 100 Mb - now general syncing "J. P. Gilliver" <G6JPG@255soft.uk> - 2023-07-29 20:07 +0100
    Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-07-27 08:09 +0200
  Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Java Jive <java@evij.com.invalid> - 2023-06-16 13:28 +0100
    Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-07-27 08:17 +0200
      Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Java Jive <java@evij.com.invalid> - 2023-07-27 13:50 +0100
  Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Denis Beauregard <denis.b-at-francogene.com@fr.invalid> - 2023-06-16 16:12 -0400
    Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-07-27 08:21 +0200
      Re: XXCOPY & Robocopy barf on files bigger than 100 Mb john <john1@s145802280.onlinehome.fr> - 2023-07-27 13:50 +0200
        Re: XXCOPY & Robocopy barf on files bigger than 100 Mb "J. P. Gilliver" <G6JPG@255soft.uk> - 2023-07-27 16:28 +0100
          Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-07-28 08:26 +0200
        Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-07-28 08:23 +0200
          Re: XXCOPY & Robocopy barf on files bigger than 100 Mb john <john1@s145802280.onlinehome.fr> - 2023-07-28 11:20 +0200
            Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-07-29 05:30 +0200
          Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Denis Beauregard <denis.b-at-francogene.com@fr.invalid> - 2023-07-28 08:10 -0400
  Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-07-29 05:56 +0200
    Re: XXCOPY & Robocopy barf on files bigger than 100 Mb john <john1@s145802280.onlinehome.fr> - 2023-07-29 13:44 +0200
      Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-07-31 13:05 +0200
        Re: XXCOPY & Robocopy barf on files bigger than 100 Mb john <john1@s145802280.onlinehome.fr> - 2023-07-31 14:00 +0200
          Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-08-03 07:08 +0200
            Re: XXCOPY & Robocopy barf on files bigger than 100 Mb john <john1@s145802280.onlinehome.fr> - 2023-08-09 10:53 +0100
              Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Steve Hayes <hayesstw@telkomsa.net> - 2023-08-12 09:24 +0200
        Re: XXCOPY & Robocopy barf on files bigger than 100 Mb Enno Borgsteede <ennoborg@gmail.com> - 2023-07-31 20:54 +0200

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