Bypass restrictions from Windows 7 RC directly RTM

        Although Microsoft officially claims that Windows RTM does not support direct upgrade installation from the RC version, when users run the RTM installer directly on the RC version, they will find that the upgrade installation option is not available, only the custom installation method can be used, and the original system The files will be moved to a Windows.old folder. But in fact, this is just a "scared" argument, because the method of cracking the restriction already exists, and Microsoft has been ignoring the existence of this method, it seems to acquiescence to this modification. Someone may have thought of it, yes, just like the way to upgrade from Beta to RC, modify the cversion.ini file in the installation image. Many people have successfully upgraded to Windows 7 RTM using this method. The specific method is as follows: Unpack the downloaded ISO image file; go to the “sources” directory; open the “cversion.ini” file with any text editor. Change the 7233.0 in the second line "MinClient=7233.0" to RC version 7100.0, save and close the editor; modify the cversion.ini file back to the previous folder, double-click "setup.exe" Install RTM. However, I would like to remind you that although you can use this method to directly upgrade and install Windows 7 RTM based on the RC version, there may be some uncertainties that may cause some unexpected situations in the future. Therefore, you are not encouraged to upgrade the installation directly. This is also the original intention of Microsoft to make restrictions.