From: "David Blair" 

I would only replace those files which are the "same"- so both
the Installation History and Windows Update won't have an issue. Both
installation, from an XP perspective, are the same.


"Jan van Hoek (NL)"  wrote in
message news:VA.000001c6.008cc35e{at}xs4alldot.nl...
> >> || Why don't you just copy the files
> >> ||from you up to date install
> >> ||to your non-up-to-date  install?
> >> I thought of that, but was unsure if it would be wise.
>
> It may prove effective, IF it succeeds. However, if either partition is
> active, you will receive a lot of "file in use" errors,
which will defeat
> your purpose.
>
> True installation programs (like the Windows Update function) have
> workarounds for that, e.g. via the infamous re-boot. But the COPY/XCOPY
> cannot cope with such situations, and neither does Windows Explorer. All
> will fail to get those files accross.
>
> Whether it is unwise to bypass the Windows Update (and Restore)
> functions, noone can tell. For starters, it won't correctly update the
> Add/Remove Programs list, and it will falsify the Installation History as
> displayed by Windows Update. Everyone will advise you against such a
> bypass action. But some of the time you have no alternative than to jump
> blindfolded and hope for the best

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