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Vista 32 bit to windows 7 64 bit with upgrade disc

I currently have vista 32 bit installed and was thinking of upgrading to windows 7 64 bit. From what I've read, it is possible to do this using the upgrade disc, but not with the in place upgrade. Wondering if anyone could explain how to do a proper clean install using the upgrade disc. Thanks.

BTW, I am running the home edition of vista and would be going to home premium of windows 7 if that makes any difference.

Thanks again
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  1. Best answer
    To install using an upgrade install disk (Must Own a qualifing Operating system - Does not have to be installed).

    Do a Clean Install, But DO NOT enter your Key
    Goahead and let windows 7 down load critical updates. Then:

    Open regedit.exe with Start Menu Search and navigate to:
    HKEY_LOCAL_MACHINE/Software/Microsoft/Windows/CurrentVersion/Setup/OOBE
    Easier - Just do a search for " MediaBootInstall"

    Change MediaBootInstall from "1" to "0". (Double-click it and then enter 0 in the dialog that appears.)

    Close RegEdit.

    Open the Start Menu again and type cmd in Start Menu search to display a shortcut to the Command Line utility. Right-click this shortcut and choose "Run as administrator." Handle the UAC prompt.

    In the command line window, type: slmgr /rearm

    Then tap ENTER and wait for the "Command completed successfully" dialog.

    Then, close the command line window and reboot. When Windows 7 reboots, run the Activate Windows utility, type in your product key and activate windows.

    Alternate procedure:
    Do a clean install - BUT DO NOT enter Key
    After you have done a clean instal, Do an install a 2nd time like you would for upgrade, this time enter your Key.
  2. Yes, a 32- to 64-bit "upgrade" can use the upgrade disc but it must be done using a clean install.

    If you boot from the 64-bit upgrade disk, it should find the existing Vista installation and allow you to perform a clean install. The old system will end up in a folder called "Windows.Old".

    If you want to install to a brand new disk and keep the old one disconnected so that you have a fallback plan, then you can follow the instructions here: http://www.winsupersite.com/win7/clean_install_upgrade_media.asp
  3. Thank you very much to the two of you.
    Will hopefully buy windows 7 soon.
    Thanks again
  4. Best answer selected by kronos2000.
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