This can be a followup to copying an previous Time Machine backup to a more recent, bigger disk actually takes months, any technique to velocity up / make it incremental? .

tl;dr on that: I am attempting to repeat a 6 TB nearly-full Time Machine disk to a brand new 12 TB disk and use the brand new disk as a substitute. The suggestion from the above hyperlink (thanks @benwiggy): “Use Disk Utility to ‘Restore’ the previous disk onto the brand new one.”

So I boot into restoration mode (new Catalina improve), restore to the brand new disk from the previous one, and see

Couldn’t validate sizes – Invalid argument.
The operation could not be accomplished. (OSStatus error -50.)

This appears to be, really, an invalid argument error message. Any knowledge? (Is it maybe not potential to revive onto a bigger disk and that is the size-validation concern?)