I'm trying to install Windows 10 on my non-Retina Mid-2012 MBP. It previously had a Bootcamp Windows 7 that I had to remove manually by deleting it's partition via Disk Utility.
I'm trying to install via USB Flash Drive and my Windows ISO is Pro build 1809. I also updated my macOS to 10.14.3.
Problem is when I open up Boot Camp Assistant, the window is different from everything I've seen on youtube as it does not show the disc with a slider to allow me to determine how big my Bootcamp partition I want to be, after choosing the ISO and USB drive, straight goes to downloading drivers and after that it said it work is done and didn't restart automatically.
And when I restarted myself, it did not automatically go to windows setup and the second time I held option key but I got presented with three options, one Macintosh HD and the other two (with yellow USB icons) were EFI Setup and I think Windows Setup and since it was not normal I decided not to install that way with assumption that Windows' setup will have no partition available from macOS to install to.
What should I do now?