Not a Spielberg masterpiece but something I knocked up this morning. There is one mistake in it, corrected in the second-half of the video. The Mac requires a 64-bit Linux distro, not a 32-bit one, so the same .iso file I used for the Dell Inspiron was used in trialling Ubuntu 20.0.4 on the 2008 MacBook Pro.
I’ve also discovered that Etcher is available for Windows as well – go to pull-down button on this page. It might be worth looking at this as an alternative to Rufus.