balenaEtcher indicates success but Mac OS X says The disk you inserted was not readable by this computer.

Hello,

balenaEtcher says that the microSD card was programmed correctly, but Mac OS X says that The disk you inserted was not readable by this computer.. The error message seems to occur when balenaEtcher unmounts the verified microSD card. The image being copied to the card is a console version of Debian for the BeagleBone Black, specifically bone-debian-9.12-console-armhf-2020-04-01-1gb.img. I am using balenaEtcher 1.5.80 and I am running it on a 2018 Mac Air running Mac OS Mojave 10.14.5.

When I try to boot the BeagleBone Black from the resulting image, it doesn’t behave according to the material on the various BeagleBone websites.

What am I doing wrong?

Regards,
Peter