I have a mid-2010 27" iMac with macOS 10.12.5 and an external DVD – USB SuperDrive (the internal DVD drive is broken).
I can't install Windows 7 from DVD with Bootcamp. After downloading support software to USB flash drive via BootCamp Assistant, I get an error on restart:
No bootable device — Insert boot disk and press any key.
What can I do?
Best Answer
You need to convert it to an ISO. Apple's official guide