I know that Super Duper has not yet been updated to create a bootable backup, but I assume it can still do some sort of basic backup.
I was trying to do that today and got a message saying the partition on an external drive I was trying to copy too needed to be in APFS format (I had it as Mac Journaled). So I formated it to APFS and tried to run a back up. Well, the only thing that happen was the timer elapseb on super duper kept going up, but nothing happened. Gave up after 50 minutes.
Tried restarting the Mac, but every time I open Super Duper now, it says my Macintosh HD isn’t mounted! If I close that warning, I can still select the Macintosh HD from the dropdown menu. But, as before, nothing actually gets copied.
So I looked in disk utility to see what it said was mounted or not and, frankly, I don’t get it. Here is what I see:
Apple SSD AP0512M Media - option to mount it is grayed out.
…Container disk1 - this one has an option to unmount, so I guess it is mounted now.
…Macintosh HD - this is gray but there is a button to “mount” it - which doesn’t seem to do anything!
…com.aple.os.update-55… - this has an unmount option so I guess it is mounted.
Finally, with the same indentation as Macintosh HD, there is “Macintosh HD - Data” - this also has the unmount button.
So how does this new system work and why can’t I mount Macintosh HD?
I would think, if it wasn’t mounted, I wouldn’t be able to boot the computer!