Originally Posted by taming
There have been stretches of time when users have done all sorts of things to try to get a specific SD card, or WiFi, or USB connection to work. Anytime that kind of thing has been common in the past, it has been a bug on the Kobo side, not a problem with what the user is doing.
Thanks, taming. Perhaps that is the answer here -- there is no answer. Still, I've never run into this in all my many years of dealing with storage and devices.