how can i upgrade windows 7 evaluation copy to ultimate
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More about tomshardware
  1. Buy Ultimate and do a clean install. There are workarounds, but a clean install is your best bet.
  2. You cannot Upgrade from RC built to Windows 7!
    Only If you licensed have older versions of windows, you can upgrade from it!
    These guides will help you!

    For upgrading!

    If you want to make clean install from upgrade media, have a look at this!
  3. Actually you can upgrade from the RC to RTM, but it's not a very good idea. Doing so can have any number of strange consequences, that will likely result in the system being formatted anyway. Best to get it over with now, and do a completely fresh install the first time.

    However, if you insist on doing the upgrade, see number 16 in the Common Questions thread. A link is provided to a guide that explains the process.
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