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Number   :  4145
Date     :  2003-03-27
Author   :  Garry Deane
Subject  :  Re: Problem with Synchronization using CLONE
Size(KB) :  1


--- In xxcopy@yahoogroups.com, "Nelson"  wrote:
> Hi, I just found out about xxcopy today, and it looks sweet~!
> 
> However, I have trouble trying to synchronize (or clone).
> It appears that xxcopy is copying every single time and
> not skipping through existing files.
> 
> Steps:
> 1) xxcopy c:\src d:\backup\src /clone /yy
> 2) xxcopy c:\src d:\backup\src /clone /yy
> 
> Result:
> it copied all the files in the c:\src again even tho I
> didn't touch anything in the c:\src folder.
> 
> Expected (Desired) Behavior:
> I am expecting that when I execute the 2nd step, it would
> skip all the files (same date/time) that already exist in
> the destination folder, so that it copies newer/updated
> files only.
> 
> What am I doing wrong? Thanks in advance. I am running
> in dos prompot of winxp pro.

Those commands should do what you expect. Are you sure it is every 
file that is re-copied or just some of them? I haven't heard of a 
case where every file is re-copied.

What is the D: drive? There can be a timestamp granularity issue with 
copying between different disk formats (FAT->NTFS), network drives 
and CD-RW's. Use /FF to see whether that resolves the problem.

There can also be an issue with short filename matching on some CD-RW 
formats. Use /NX0 to see whether that resolves the problem.

Garry



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