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Number   :  157
Date     :  2001-06-07
Author   :  Kan Yabumoto
Subject  :  The directory timestamp
Size(KB) :  2



Due to XXCOPY's roots in DOS, XXCOPY had not attempted to set the
timestamp on the directory it created. But, that has changed.
In recent beta test releases, XXCOPY started to support the timestamp
on directories it creates.

The only problem is that the timestamp change is *NOT* supported
under the DOS/Win9x/ME environment (the file system does not
support it), XXCOPY still cannot set the directory time at all
under Win9x/ME. However, in NT4 or Win2000, XXCOPY *CAN* set
the directory time correctly. So, if you run under NT/2000, then,
you will see the feature working. If you run Win9x, you may make
a dual-boot configuration and access the same volume in NT/2000
and set the time if you really need the directory date set.

Don't get be confused. This is not the FAT32/NTFS difference.
You can set the directory time on FAT12/FAT16/FAT32 volumes
(not just NTFS) using XXCOPY (recent beta versions and future
official versions), as long as you run it under WinNT/2000.

In other words, the directory timestamp thing is not supported
by Win9x, and XXCOPY being a "well-behaving" program using only
the official File I/O APIs to interact with the volume, XXCOPY
just cannot set/modify the timestamp of a directory.

By the way, the new beta version is coming... Possibly today.
We will have an official announcement shortly.

Kan Yabumoto

===================================================================

At 2001-06-07 09:51, Joseph Maddison wrote:
> > If you want to make a backup of the C drive without affecting
> > existing data on D, that is, a perfect replica of Drive C:
>
>There are a few caveats here. I believe directory dates get set to the
>current date/time of copy, physical position of the files on the
>first disk is not preserved, any non-file data (like deleted files)
>is not copied-- this could be considered a feature though, and
>there may be a problem with files that are in use, by the OS or other
>programs, not getting copied. So, this is not "an exact copy", but it
>may be "good enough".
>
>On the plus side, you don't have to shut down to make a backup,
>XXCOPY is free compared to the cost of an image copying utility, such
>as Drive Image or Ghost, and if you start with a blank disk, the
>resulting backup should be automatically defragged.
>
>Joseph Maddison



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