Bootcamp asst.

Hi Guys, having some confusion with Bootcamp asst here...
Two MBPs running Sierra. Both with Bootcamp 6.1.
I have downloaded (legally from windows website https://www.microsoft.com/en-gb/soft...ad/windows8ISO) the W8.1 ISO. I have mounted it on both machines. However, when I open bootcamp I see some differences in options as attached.
On the machine I need to install W8.1, I only get the option for W7. The machine I don't need Windows on, gives me the option for W7 or later. Admittedly, I have a Bootcamp partition on the machine giving me the option for W7 or later, but I don't think this is the reason.
How do I proceed to install W8.1 on the machine only showing me W7?

(OH and further to the legality question... I have a legal purchased auth code for the install, this is a question about bootcamp only).

Thanks as always!

Threads merged (please...only need one thread/topic). Thread also moved to better area.

Thanks,

- Nick

See this Apple Support Article, https://support.apple.com/en-us/HT201468, be sure to look at system requirements link. It's especially important. You will need to provide year and model specs for your Macs for more help.

I'll pop the link here for anyone else who sees this article...
https://support.apple.com/en-gb/HT201457

Checking the above page, it appears the Mid 2010 13 inch MBP is not compatible. Right, W7 it is!

Thanks for pointing out my oversight here.