„Its bad enough that with Vista users are expected invalidate their previous Windows XP key (Well Microsoft does that for you – how nice!) when installing Vista, but Microsoft also refuses to users do a clean install of the new OS. Vista REQUIRES a user to install Vista over Windows XP is they have an upgrade version. Not Fair! To make the playing field even there is a LEGAL workaround that allows users to perform a clean install, with NO PRIOR OS on the hard drive. Although there are a few steps, it is very simple to use this loophole.
Just follow these steps:
* Boot from the Windows Vista Upgrade DVD and start the setup program.
* When prompted to enter your product key, DO NOT enter it. Click %u201CNext%u201D and proceed with setup. This will install Windows Vista as a 30-day trial.
* When prompted, select the edition of Vista which you have purchased and continue with setup.
* 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.
* This time, type in your product key when prompted.
* 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.
Annoying that you have to install Vista twice, but it%u2019s not fair that Microsoft restricts the ability to do a clean install.“