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I'd like to be able to test automated disabling of TimeMachine asking to use a new drive.

It's also made me curious about how macOS/OSX identifies "New Disks" vs ones it's seen before, and what else happens when a new drive is installed.

It would be ideal if on a lab computer I could reset to a state before the drive was installed, rather than wipe and reinstall the OS.

  • Are device IDs stored somewhere permanently?
  • Does spotlight start indexing immediately?
  • Where else might the drive show up?

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