Robert in CA wrote:

The DVD-R's have arrived and now that we have the
other problem resolved we can go ahead.

I forgot exactly where we were on this so have
to re-read it.

I'll my monthly Mrimg and make a restore point now
that everything is working again.

Robert

Just remember you'll be installing on a *spare*
drive placed in the computer, to protect the *original*
or *good* drive.

If the COA sticker has a 25-character key on it
(five groups of five), you can install on the
spare while the spare is empty. And type in the key
when prompted.

You can clone the original drive to the spare drive,
for cases where the COA sticker doesn't have a license
key on it.

The MediaCreationTool1903 can take care of most of
your needs, and if you're patient, I think it
offers to burn the DVD near the end. You select the
option to "make media for another computer", to be
able to make a DVD.

The download prepared by the MediaCreationTool1903 is

3,967,483,904 bytes

( Win10 64bit mediacreation 1903 7OSes iso file )

The disc would include Windows 10 Home and Windows 10 Pro,
as well as five other versions. Windows 7 Pro can be
promoted to Windows 10 Pro, as to how the choices work.

You are preparing a DVD for this, because Windows 7 lacks
an ISO mounter of its own. On later OSes, you can instead
use a "mount" command to make a virtual DVD drive with the
install materials on it. But Win7 is a bit backward, and
doesn't have that feature.

You don't generally use third-party ISO mounters for that,
because they "confuse" DVD writer programs. I had one once
and had to remove it, because of that behavior.

HTH,
Paul