Where can I download Windows 8 legally, from Microsoft?
No, I am not looking to pirate. I bought a key through the Upgrade assistant (for just $15 due to the upgrade offer), but it downloaded an iso file that was between 2.3 and 2.5 GB. Which doesn't make sense to me, because the Evaluation version of Windows 8 x64 is closer to 3.4 GB in size. I assumed the Upgrade Assistant would be intelligent enough to realize that it is being run on a Windows 7 x64 machine and by extension, download the x64 code.
UPDATE: I should clarify, because it appears this point was somehow unclear; I used the Upgrade Assistant to download the file and then with the same tool, converted to an ISO. I am concerned as to whether it's really the x64 image, because of how small it is in comparison to the Windows 7 x64 ISO. I'm currently on a very stable installation of Windows 7 and I only want to proceed to install Windows 8 if I'm sure I have everything ready. It's not that I am unsure how to install it, but I would rather not be forced to go through the setup only to discover at the end of the install that I have the x86 version.
Previously, I was able to legally download the ISOs (sans the keys, of course) from the Digital River host. I do not see an option to do that.
UPDATE #2: Because several users were being quite frankly obnoxious and rather unhelpful, I want to make sure this is fully explained. I was originally unsure if I had the 32bit or the 64bit ISO of Windows 8 and I was suspicious due to the size, and rather than barking at me to just try it, user "EKW" was kind enough to explain to me how to tell which ISO I have (which is still connected to my original question). Upon doing so, I have found that although I ran the upgrade assistant on Windows 7 x64, it still downloaded a 32 bit ISO, confirming my suspicions. I will attempt to try it again on a different machine.