I opened Super Duper this morning to do my usual incremental backup but SD opened with a different window. This one indicated that it would be doing a completely new backup including the need to choose a disk.
Shortly after, as Time Machine attempted to do its backup, a dialgogue box appeared with:
"The identity of the backup disk "Time Machine" has changed since the previous backup.
The disk may have been replaced or erased, or someone may be trying to trick your computer into backing up to the wrong disk."
....and I was presented with two radio buttons.
Use this Disk and Don't Back Up
I then opened Time Machine and it said....
"Latest backup to Time Machine October 7, 2017" .....which is definitely wrong. I've done file restoration in the last week.
And, if I open the file restoration now, I don't get any choice to do so.
So, long story short....I have two backup programs gone awry. The only change I've made in the last few days was the latest Apple Security update.
Edit: In addition to the above, my DropBox seems to have reverted to the equivalent of a brand new install. DropBox keeps searching for an account and, when it doesn't find mine, opens the "Sign In to Get Started" dialogue box.
Edit 2: Well, I'm mystified. Before taking my dog for a walk I did a shutdown. Upon our return and a rebooting, everything's back to normal.
Edited by ryck (11/02/17 11:59 AM)
iMac (Retina 5K, 27", 2017), 3.4 GHz Intel Core i5, 8GB RAM, 2400 MHz DDR4
OS High Sierra 10.13.6
Canon MX710 Printer
Epson Perfection V500 Photo Scanner
Time Machine on 320GB OWC Mercury OTG Pro
Carbon Copy Clone on 500GB OWC Mercury OTG Pro