Iso from files is an absolute godsend, and my 2nd contribution will be on it's way with thanks.
I sincerely hope basic iso creation of "ordinary" disks could one day be a possibility, fingers crossed.
e.g. The other day I wanted to copy a bootable linux live cd. I will try using the boot cd guide, but I don't understand enough about the process to know if the file order matters for this type of disk.
Best wishes.