Or is it my being a new 18.104.22.168 Nero user.
I successfully burned a CD using the FAT16 partition of my Dell box as the source for boot image data. The CD boots up fine to run the Dell diagnostics that you would normally reach through an F key press on boot up.
The problem is I now cannot change the "Bootable Logical Drive" (normally A:floppy) to anything other than the FAT16 source.
This is very disturbing as I often need to create boot CDs with other image (IMA) files. Creating boot CD/DVD with ISO files works fine.