For gaming PCs, Windows 7 is still by far the most widely used Windows operating system. Windows 7 Ultimate ISO is available in both 32-bit (x86) and 64-bit (x64) editions and has Home Basic, Home Premium, Professional, Ultimate and Enterprise versions. Only the Starter edition of Windows 7 does not have an x64 version.
Both 32-bit and 64-bit editions of the 5 available consumer Windows 7 versions all easily fit on a single layer DVD. Instead of doing that Microsoft released each version as a separate disk and each of those has a separate 32-bit and 64-bit DVD. That’s 9 different DVDs if you want all Windows 7 versions to hand. They are actually all on each DVD but hidden from view by the \Sources\ei.cfg file, delete that and everything with the same architecture becomes available, except Enterprise.Firstly, you have the choice to include both 32-bit and 64-bit recovery options on the same disk. Secondly, you can also perform a repair install for both 32-bit and 64-bit systems. WinAIO Maker is far more capable than just creating an all in one ISO as it can delete specific Windows editions from the WIM file. WinAIO Maker Professional is a standalone portable executable but does require .NET Framework 3.5, Windows 7 Ultimate ISO, 8 and 10 users will need to install it from the optional features tab. Alternatively, if you wish to create an all-in-one Windows 7 installer thumb drive, use the WinToUSB option instead from the main window. Have a freshly formatted USB drive plugged in and select it as well as the source folder for your custom all-in-one installer in order to proceed.