I previously burned two DVD's of Windows 7 Ultimate: one of them was 32-bit and one of them was 64-bit. I found one of them (don't know what happened to the other one), but I am unsure if the one I found is 32-bit or 64-bit. How do I find out?
I bet there is some pro way to do this, but how about inserting the DVD into a computer you know for sure runs a 32-bit version of Windows? If setup.exe launches successfully, the DVD is x86, if it doesn't launch, it's x64.
If its all editions - Starter to Ultimate - its definitly 32bit version.. Just like we told you!!. 32bit versions are apporx 2.3 GB and 64bit are approx 2.8 GB depending on language..
Just look in Sources folder if it has install_Windows 7 STARTER.clg it is x86, x64 does not contain starter edition.