If you will be installing the operating system for the first time, you will need your Windows product key (xxxxx-xxxxx-xxxxx-xxxxx-xxxxx). For more information about product keys and when they are required, visit the FAQ page.
“How does one download the ISO offering of Windows 8.1 Pro without having a MSDN subscription?”While the Windows 8.1 for Enterprise ISO is readily available and unaware that downloading the Pro version was not as easy, a bit of digging was required to find an adequate answer to this problem. The solution is as follows:
With Windows 8 or 8.1 license key in hand, select to either install Windows 8 Pro or Windows 8.1 Pro.NOTE: Remember to select the corresponding install that matches your key. If you have a Windows 8 key, you can still upgrade to Windows 8.1 afterwardsNOTE: You can only download the Windows 8 or 8.1 Pro ISO with a valid license key. If you wish to only evaluate Windows 8.1 please download Windows 8.1 for Enterprise ISO.
When asked run the WindowsSetupBox.exe file
Enter the Windows 8 or 8.1 license key when prompted
Once the license key is entered, the WindowsSetupBox.exe will respond with the corresponding version of Windows 8.1 (Standard or Pro) to install. ClickNext to continue
The download of the corresponding Windows 8.1 version commences.NOTE: No installation of Windows 8 or 8.1 commences at this time. Only the pertianat files required for the installation are downloaded
Once the download has completed, you are presented with the following choices:Install now: Will immediately install Windows 8 or 8.1 on the computer it is downloaded onInstall by creating media: Will create an ISO of Windows 8 or 8.1 to installed via a bootable USB or DVDInstall later from your desktop: Creates an executable to install Windows 8 or 8.1 later from your computerTo create the ISO selectInstall by creating media and then selectNext
Next you are provided the option to either create a bootable USB Flash Drive or create an ISO file to burn to a disk later. Installing Windows 8 or 8.1 is easier, however should you not have the appropriate sized flash drive available, selectISO file and the select Save
At this point, you are prompted to save your newly downloaded Windows 8 or 8.1 ISO file to your desired directory or hard drive