It's strange though... It's as if the Wii U has some special code that triggers when it detects a SD card called that. Maybe it's for some sort of recovery/debug/dev mode that Nintendo uses internally.
@Michael199740 pic is about an 160-0103 error,not an minus error(it's an wrong thread to deal with it,but his error isn't an minus error)
Edit: btw,SD card name "Wii U" is different than "wiiu",so,you shouldn't have any errors,since the guide is talking specifically about the name "wiiu" and "cbhc"
Once again I fell down the martial arts rabbit hole and am plumbing the murky depths of the internet's various martial arts and fighting crafts echo chambers.
If you're not actively involved and only get up to speed every few years or so, you can see the tide of public opinion flapping worse than my dong while I'm skipping naked down a hallway.