A file extension, is a very simple idea that dates back a couple of decades now. To make it make sense, the user must understand what a file extension is before they start creating and renaming these txt files…. You can find similar instructions on the Microsoft Website. I do not have time right now to go into depth about the second part of the question, but it is possible. Maybe I need to try this method soon when I upgrade my installation. My installation disk always asks me a key first before we proceed. Wow, I thought I need a product key first before proceeding to installation. Email me when somebody replies to my comment. All we need to do is to provide the version details inside this file so that Windows Setup is not needed to ask for a product key to install the appropriate version relevant to that product key. To achieve our objective, we need to edit the ei. You can easily force the setup to skip the Product Key check and proceed with the installation. This is because Windows setup finds out which version to install from the Product Key and hence product key is needed before proceeding with the installation.īut what if you want to install and trial Windows 8.