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I have an upgrade edition copy of win7 from my university, but if I use it on my XP machine - will I lose access to that XP key?

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Please rephrase your question. It does not make sense. –  user3463 Sep 29 '10 at 22:44
    
Not an answer to your question, but may be useful to you, a nice video on how to upgrade to W7 from XP...windows.microsoft.com/en-US/windows7/help/… –  Moab Sep 30 '10 at 2:20

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The upgrade edition is basically this: they check for your WinXP key in your WinXP install and if it exists it uses the Win7 key to install.

So you can still use XP, but contractually, you cannot have both installed at once (anywhere).

Think of it like having a locked door with two locks. You need both keys to open the Windows 7 door.

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thanks for the info –  DB9 Sep 30 '10 at 15:40

You cannot "upgrade install" from Windows XP to Windows 7. You must complete a "fresh/custom install". You can however run the Windows Easy Transfer Wizard and let it copy your personal files to a DVD/External media such as external harddrive or USB flashdrive.

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ok, thanks for letting me know –  DB9 Sep 30 '10 at 15:40

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