How do I download a .dmg file or Sierra (or any recent macOS)?
I have one very broken MacBook pro, and I want to make a bootable usb drive to try and fix it. I have another, older, MacBook, which unfortunately does not support Sierra, but it is the only macOS that I can find in the app store. It won't let me download it, because it doesn't run on my MacBook.
I want to either force the app store to let me download it (on my MacBook, even though it can't run it), or I want to download the file from somewhere else.
Is there no way that I can just download Sierra on my Mac that does not support it?