Moving of Time Machine Back-Ups; computer says no.

nicjondon wrote:

I have attempted several variations along the theme of moving three time machine backups to another drive, and all have failed.

Not recommended. Don't do it.

Start a new Time Machine backup, save the old drive(s) if you want to preserve the backups.

If you value your user data

3-2-1 Backup Strategy: three copies of your data, two different methods, and one offsite.

More than one device, more than one backup methodology.

It was never a good idea to try to move backups, but it could usually be done before Apple moved to APFS formatting on Macs a few operating systems back.

But, even if the transfer was successful, Time Machine would want to start all over again with a new complete backup....and not continue backups to the existing file.

Don't do it if your Mac is running Big Sur, Monterery or Ventura. It won't work. All sorts of permission problems if you try the usual workarounds.

Start over with Time Machine to a new drive. Maybe keep the old drive around for a month or two in case you need to go back and pick up a file. After that, you could erase the drive and use it as a spare, or set up a second backup plan using an application like Carbon Copy Cloner.

I have no interest in CCC, other than that as a satisfied customer.