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Possible Duplicate:
Windows 8 upgrade

If I purchase the Windows 8 Pro copy via the Windows 8 offer that's currently running until Jan 2013, do I have to install it on a PC having an existing installation of an eligible copy of Windows 7, or will it allow upgrading from a regular blank hard drive?

Also in the future if I need to reformat my PC, will I have to first install Windows 7, and then upgrade to Windows 8?

kpax
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2 Answers2

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As long as you have an eligible copy of Windows 7 or XP for upgrade, you do not need to pre-install Windows 7 (or XP).

Instead of validating your existing copy, you will need to enter your Windows 7 or XP license key as well as the Windows 8 upgrade key during the installation process.

PJC
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This is only an Upgrade Version, you should have Windows XP SP3, Windows Vista or Windows 7 Pre installed to Upgrade.