Andreww said:
Hi - I have 2 PC's, one with home and one with Pro.
I want to swap them around, i.e. home-Pro and Pro-home.
Can this be done?
Assuming a retail license (OEM licenses are not legitimately
transferable), simply remove WinXP from the computer it is currently on
and then install it on the new computer. If it's been more than 120
days since you last activated that specific Product Key, the you'll most
likely be able to activate via the Internet without problem. If it's
been less, you might have to make a 5 minute phone call.
Here are the facts pertaining to activation:
Piracy Basics - Microsoft Product Activation
http://www.microsoft.com/piracy/basics/activation/
Windows Product Activation (WPA)
http://www.aumha.org/a/wpa.htm
Can I just swap Hard Disks?
Not easily.
Normally, and assuming a retail license (many factory-installed OEM
installations are BIOS-locked to a specific chipset and therefore *not*
transferable to a new motherboard - check yours before starting), unless
the new motherboard is virtually identical (same chipset, same IDE
controllers, same BIOS version, etc.) to the one on which the WinXP
installation was originally performed, you'll need to perform a repair
(a.k.a. in-place upgrade) installation, at the very least:
How to Perform an In-Place Upgrade of Windows XP
http://support.microsoft.com/directory/article.asp?ID=KB;EN-US;Q315341
Changing a Motherboard or Moving a Hard Drive with WinXP Installed
http://www.michaelstevenstech.com/moving_xp.html
The "why" is quite simple, really: You've pulled the proverbial
hardware rug out from under the OS. (If you don't like -- or get -- the
rug analogy, think of it as picking up a Cape Cod style home and then
setting it down onto a Ranch style foundation. It just isn't going to
fit.) WinXP, like Win2K before it, is not nearly as "promiscuous" as
Win9x when it comes to accepting any old hardware configuration you
throw at it. On installation it "tailors" itself to the specific
hardware found. This is one of the reasons that the entire WinNT/2K/XP
OS family is so much more stable than the Win9x group.
--
Bruce Chambers
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