high sierra Create a DVD disk image
Trying to create a CD/DVD image that will be used on a windows device. I tried following the Apple instructions:
https://support.apple.com/guide/disk-utility/create-a-disk-image-dskutl11888/16.0/mac/10.13
But when I do it I get a Status 22: invalid argument. About as helpful as teats on a bull. I've searched for this status code but nothing. Here are the screenshots, what argument do I have wrong? I've tried a number of combinations all with the same message.
MacBook Pro 13", macOS 10.13