Delete Time Machine Snapshots When Your Disk is Almost Full

 Sun Nov 01, 2020, last updated Thu Mar 24, 2022 -  Jim Deibele

If you’re running a Mac with limited internal disk you’ll encounter this message:

There’s a great article on how to manually delete Time Machine Snapshots  

Key steps:

  1. List available local snapshots “sudo tmutil listlocalsnapshots /Volumes/Macintosh HD”
  2. Delete each snapshot “sudo tmutil deletelocalsnapshots 2020-11-01-002004”

I’ve had to do this a lot when upgrading to a new beta release.