I have a 2015 MacBook Pro running MacOS High Sierra 10.13.4 and I am trying to install Windows 7 via BootCamp. I have had Windows 10 for a long time and I absolutely hate it and don't know what to do. I have the Windows 7 x64 ISO but of course whenever I try to use Boot Camp Assistant it says that I need a newer version of Windows. I used Disk Utility in order to create another partition (FAT32) and it worked. I then tried using my PC to make a bootable USB flash drive of Windows 7 (Windows USB/DVD Download Tool) but my Mac doesn't detect the drive on startup. I then tried using unetbootin on Mac but same issue. Does anyone have any idea how to do this? I know it's probably sounds silly to some people that I am trying to install an old operating system but I truly prefer Windows 7 over 10 by far, which is why I am using it on my PC as well. Any information is appreciated. Thank you.