Can't install Windows 10 with Boot Camp
I have a new Retina iMac on which I want to put a Boot Camp partition and install Windows 10 from a Windows 10 USB stick that I bought from Microsoft.
I made an ISO image from the Windows 10 USB stick, then launched Boot Camp Assistant and selected all 3 options. I chose the ISO image and selected a blank MS-DOS FAT USB stick as the destination. When I clicked Continue, it came back with “Your bootable USB drive could not be created. Boot Camp only supports Windows 7 or later installation on this platform. Please use an ISO file for Windows 7 or later installation.”
Windows 10 is later later than Windows 7, so what’s the problem?
Any suggestions? Thank you.