From: "Wayne Johnson"
I know Kenny thought that there was a bug in Xcopy because
it acted different from DOS than in did from a DOS Box [window].
Lots of things worked different in a situation like that.
Isn't one real mode,
and the other protected mode/realmode simulation/virtualization?
(I think a dos box was the first "example" of virtualization that I remember.)
It is sort of similar to the way a cold boot is much better than a warm one...
(And some types of "re-start" being the least effective as far as cleaning
things up...)
It should be noted the xcopy (at least? in the time frame we are
talking about) had a problems with long filenamed directories IF
some of (the older and) lower numbered (dos)short filenamed
directories were removed. (I wonder if they ever bothered to fix that.)
MS DID re-write xcopy from the ground up at least once. (At that
time "xcopy.mod" started showing up (from MS) along with a small "stub"
xcopy.exe launcher that "called" xcopy.mod to actually do the work...)
Seems like xcopy does not "copy" (dos equivalent)short filenames
(the dos 8+3 conversions), BUT re-generates them on the fly...
(Specifically like the "names~1.ext" type.)
This is explained on the xxcopy site lots better than I could here,
and can be easily reproduced by "anyone" that wants or "needs" to...
Besides, all this might have changed (again), and I don't use either
and have not kept up with any possible improvements from MS.
This is one of those topics that surfaces from time to time when
people say they use xcopy perfectly, and others say they are having problems.
The "problems" surface when a short filename is re-generated that
is different than it "used to be", AND a program tries to use that instead
of the long filename directly... This is a BIG case of YMMV since
it involves "issues" that would be VERY user specific...
Rick Glazier
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