I have a mid 2011 21.5” iMac with High Sierra, the disk drive I think has an issue, it writes to DVDs but can’t read. I successfully burned Windows ISO to a DVD+ disk but the drive reads it as blank DVD, I confirmed this by using another pc.
I went to the USB drive way, I modified the BootCamp plist file to enable USB drive, I successfully created windows installation drive with BC, sat the partition, but when the Mac boots, it goes to a black screen, with a message “no bootable device”. I couldn’t find any way to read from the USB drive, I used both USB 2.0 and 3.0.
Any help would be highly appreciated.