How To Clean Install Vista (Without XP) From Upgrade Version in 7 Steps

By Angsuman Chakraborty, Gaea News Network
Saturday, February 3, 2007

Effectively this means that any retail upgrade DVD can be used as a fully functioning full retail copy of Vista. You can pay the price of an upgrade DVD version to get a clean Vista installation! The steps have been confirmed.

  1. Boot from the Windows Vista Upgrade DVD and start the setup program.
  2. When prompted to enter your product key, DO NOT enter it. Click “Next” and proceed with setup. This will install Windows Vista as a 30-day trial.
  3. When prompted, select the edition of Vista which you have purchased and continue with setup.
  4. Once setup has been completed and you have been brought to the desktop for the first time, run the install program from within Windows Vista.
  5. This time, type in your product key when prompted.
  6. When asked whether to perform an Upgrade or Custom (advanced) install, choose Custom (advanced) to perform a clean install of Vista. Yes, this means that you will have to install Vista for a second time.
  7. Once setup has completed for the second time, you should be able to activate Windows Vista normally. You can also delete the Windows.old directory which contains information from the first Vista install.


Why Microsoft left this loophole? I am as much in the dark as you are.


July 11, 2009: 6:24 am

Do you think there will be a similar way of doing this with the retail upgrade of Windows 7?

sumit saxena
November 15, 2008: 4:08 am

i want to no about install second os when a system
already has original windows vista.

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