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If I'm upgrading, do I have to re-install all of my applications? I hope not. I don't see how re-installing the apps would help (except if the OS upgrade wipes/resets the registry)--the app files on disk would all be the same after as before.

I assume the Windows 7 upgrade just updates the WINDOWS directory?

Googling didn't answer this for me.

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migrated from serverfault.com Jul 22 '10 at 21:45

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2 Answers 2

up vote 7 down vote accepted

Upgrading from WinXP to Win7 is not supported

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However, XP to Vista, then Vista to 7 is supported, but pricey and probably very glitchy. Your best bet is to backup your hard disk(s), do a clean install of Windows 7 (you will need a full version, not the upgrade version), then reinstall you programs and restore your backed up files. –  TuxRug Jul 23 '10 at 3:52
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Actually, if moving from XP to 7, you can use the upgrade version, you don't require the full version. You just can't do an in-place upgrade with it, still have to do a clean install. –  Grant Palin Jul 23 '10 at 20:49

Going from XP to 7 requires a full install, officially an in-place upgrade is not supported. You will need to back up your files and settings, and ensure you have the installation files and media.

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