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Number   :  2791
Date     :  2002-09-12
Author   :  Kan Yabumoto
Subject  :  Re: File Copy Errors
Size(KB) :  2



John:

XXCOPY has an auto-retry feature when it fails a file copy.
This is typically caused by file access contentions to other
processes on the same system. Sometimes, it is an access
collision with another file which usually takes a fraction
of a second (in which case a short wait and retry will
correct the situation by itself). XXCOPY's auto-retry
feature is controlled by just one parameter which determines
the length of the retry period. The default setting is 3 seconds.
You may vary it from 0 to much larger number (in seconds).
The /CR switch (stands for Continue Retry period)

/CR0 // disable auto-retry (first failure becomes final)
/CR1 // retry during the first 1 second
/CR3 // 3 second (default setting)
/CR120 // 2 minute retry

In your case, the cause of the delay may be for two reasons.

1. the file was not accessible for 2-3 minutes that you were
waiting. (the /CR setting in your command may be very long)

2. the file copy started (albeit, very slowly) and then,
before it completed, the access was aborted due to
a factor other than initial file-open failure (the most
common problem). In this case, it is hard to say what is
the cause.

If you are not aware that you are using the /CR switch,
then the second case is very likely. If so, we just can't
fix the problem. It is also somewhat likely that the cause
of the problem may be in the destination drive.

It's hard to pinpoint the cause since all you are saying
is that there is this rather large delay between what has
started and what has happened after a few minutes of delay.

If you can repeat on the exactly the same file, repeatedly,
the file size may give us a clue. Or, you may run the
/PB1 switch which enables the progress bar (with 1 byte
as the threshold for the 2nd bar for individual file
progress) and watch the bar. For this test, you may choose
just one file which you know fails all the time.
It may tell you if the file starts successful to the mid
point or what. Anyway, for a troubleshooting, you just
can't describe your problem in three words and assume
that I have an answer. It is the guy who is in front of
the machine who can observe the situation the best.


Kan Yabumoto
=============================================================
At 2002-09-11 16:31, you wrote:
>Hello,
>
>Right now I am using xxcopy (pro) to copy files from cd's. Every now
>and then a file will fail to copy. XXcopy tries to copy the file for
>a few minutes before it tries the next file. How can I tell xxcopy to
>try only for a few seconds before giving up and going onto the next
>file?
>
>Thanks in advance,
>
>John
>
>
>
>
>
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