Windows Upgrade to Windows 7 Pro not enabled from Vista Home – Bypass
Posted by CDaze on December 12th, 2009
Ok this make no sense why the install to Win7 Pro can not upgrade from any lesser edition of Vista. This does not seem to violate any license issue as you can still upgrade to Pro by doing a clean install instead. It just won’t enable the Upgrade path keeping all your settings from Vista Home. If you bought the Windows 7 Ultimate supposedly this will do the upgrade install or if you bought the Windows 7 Home edition it will upgrade without clean install. So why the installer prevents upgrade to Pro is just pretty inconvenient and silly.
Notice this post is more of a personal note to remind myself how to do it. If you choose to try this method of installing the upgrade; you do so at your own risk and I assume no liability or obligation from any harm or problems caused from using this method. If you don’t agree, stop now and choose the default install method the Windows 7 install choose for you.
Solution. Copy your Windows 7 install DVD to USB stick or some other media that you can access from Vista. I don’t recommend copying to the same partition of the Vista installation. Find the file called ei.cfg in the \Sources folder. Rename it to ei.bak, note the file is marked read only coming off DVD – change it. Now run the setup from the copied over media location. When the installer prompts of what version you wish to install, install the one that matches your current version of Vista, ie Home Premium. Selecting anything else will not enable the upgrade path to be accepted and selecting Ultimate will not be activated with your Pro key. After selecting the matching version to your Vista install, choose the upgrade path. If it accepts the upgrade path, the install will begin copying files. If not you will be given option to clean install – retry it with a lesser edition. Sit back and wait the hour or so this upgrade is going to take. When the upgrade install is complete you will be asked to enter your license key and activate, do not enter anything and uncheck activate now, continue. This is now a 30 day trial version of the version you installed but with all your old settings. Time to bump it up to Pro version.
Go to the control panel and look for the Upgrade Anytime option.
Run it and it will ask for the install key. This is the key that came with your Win7 Pro DVD. Enter your Windows 7 Pro key, it will check if the key is valid and then it prompts about downloading files for the upgrade – takes about 10 minutes to upgrade to Pro. After it’s done it will reboot and finish the upgrade. It will now say Windows 7 Pro, you have 30 days to activate it. Click on the Activate from the control panel or wait until Windows ‘reminds you’ to activate. You should now be upgraded to Win7 Pro with all your old settings from Vista.
If MS decides to prevent this method of install you will probably end up having to do a clean install all over again or calling in to fix your activation. You might be able to roll back the upgrade back to Vista if you have a problem. I have not had any problems. If I do run into a problem or receive notice of license violation this post entry will be updated. Hopefully MS will just enable an easier upgrade method. It makes no sense of not allowing an upgrade to Pro from Home edition as an option thus forcing the user to the clean install method. Generally I prefer a clean install to an upgrade, less problems with compatibility and the system runs more smooth but sometimes the upgrade method is needed. Good luck. If another method works better please let me know.
ps To prevent spam all replies are verified for approval upon being submitted. Comments are always appreciated.
Thanks – CDaze
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