[Dan Lester]

Just a comment. I've been surprised that I can't change the names of my bootable backups. That is, when you pull up the bootable backup volume, you click on the icon, and then on the title, the title doesn't get highlighted with a light blue background, and you can't change it. Took me a while to understand that was ONLY the case for bootable backups. For other mounted volumes you could easily change the names. Yes, you can erase the disk with Disk Utility and change the name THEN, but not while there is a bootable backup on it.

I was on the line with escalated Apple support about this, and they made the point that bootable backups are specifically non-writable. I think Time Machine volumes won't allow this either. That all makes some sense, in that a bootable backup should not be changeable. Because if you change it, it isn't a backup anymore!

In Disk Utility, if you call up the "info" page on a volume, there is a "Writable" item listed. Bootable backups are "no". Non-bootable backups are "yes".

Just an interesting observation.