Writing to disk

[Daniel Crone]

I have ubuntu 18.04, and thought of trying mate.
So I downloaded ubuntu mate 18.04.
Then read how to burn to dvd.
When I right clicked on the I s o, there was no ‘write to disk’ option.
I could open with image writer.
But when doing so, image writer would have been able to write the image to a hard drive, but the dvd was not one of the choices listed.
Yet the blank dvd is listed on the desktop.
Is there something else I should do?