It's interesting. It re-occurred last nignt. So, I ran first aid on the entire disc, and it was fine. Then I ran it on the container, and it showed that it required repair and started the repair, running through all the images on the disc and then showing success. Then I re-ran first aid on the volume, and it was successful. So, whatever that means. I guess the container needed its own repair before the volume was repaired. I hope that fixes it next time the drive gets accidentally unplugged. I don't like the mini C usb connectors. The become disconnected too easily on a minor tug. I am going to unmount the drive every time it completes a backup and then just re-mount for daily backups. That way, disconnecting "improperly" will not be a problem. Good thing I found it. It saved me from buying a new external drive. Being careful, I have been running a weekly Carbon Copy Cloner backup each week on another drive, anyway.
