External DVD writer
I bought an Apple External superdrive and couldn't get it to work on my iMac so I returned it. I now have an LG external dvd/cd reader and writer and would like help in how to set it up with my computer. All that ever shows is the map of continents and when running a disc it shows not permitted. Any ideas and help on this.
iMac 21.5", macOS 10.15