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Upgrading from Windows 7 RC to Windows 7 RTM

Jul 13, 2009 Featured Article, Windows

I had upgraded Windows 7 Beta Build 7000 to Windows 7 RC build 7100 by tweaking cversion.ini. Here is my previous post for the steps. Now Windows 7 RTM is on the way soon enough. If your Windows 7 RC has already been activated, you will be able to install Windows 7 from an upgrade disk without installing an older version of Windows. Using the custom option, installation process would carry all files on your current Windows installation over to Windows 7 and store it in a folder called “windows.old”. Though Microsoft has always been suggesting not to upgrade installations from an older Windows 7 build to a newer build.

windows7rtm.gif

I personally experienced this when attempted to upgrade to the Windows 7 RC from Windows 7 Beta since the upgrade installation option was disabled. However, after modifying cversion.ini file on the Windows 7 installation source disk, I was able to continue the Windows 7 RC upgrade. Microsoft posted this workaround for those desperately wanted to upgrade to the RC from a previous build. The latest RTM candidate build issued to selected partners, build 7264, has the cversion.ini file, though the file is empty. As a matter of fact. the same workaround of editing the cversion.ini is likely the solution for those who want to upgrade from Windows 7 RC to Windows 7 RTM. According to TechBlog “This is different from Windows Vista’s installation procedure. Vista would let you install an older Windows OS, skip activation, and then install with an upgrade version. You can no longer skip activation when installing Windows 7 via an upgrade disk.”

I am waiting for my Windows 7 RTM copy, and I shall update you after I try it.

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This entry was posted on Monday, July 13th, 2009 at 4:51 am and is filed under Featured Article, Windows . You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

4 Comments

  • At 2009.07.29 14:27, Charles said:

    Thanks for this information, I was getting a bit upset that I was going to have to reinstall approximately 400GB of games and another 200 GB of applications… not allowing an upgrade from Windows 7 RC to Windows 7 RTM while allowing an upgrade from XP or Vista to Windows 7 RC is just ridiculous. Glad you found a workaround for that bit of insanity.

    [Reply]
    • At 2009.07.29 23:46, Shaji Firoz said:

      Yes, I can’t wait to try that option when RTM is available to MS partners on 6th August.

      [Reply]
      • At 2009.08.07 13:27, Brian Elfstrom said:

        Any news on this?

        [Reply]
        • At 2009.11.04 09:22, Shaji Firoz said:

          There you go..Windows 7 is now RTM and released to public

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