Am I wrong or should I file a bug? Or maybe is this fixed a Big Sur? I think this is a bug вЂ“ that Time Machine local backups can use such a huge amount of space with absolutely zero visibility. That may or may not have made the problem worse.ДЄnyhow, thanks very much to Teddy for the tmutil tip. Some of them may have been left dangling because I did not want to save them and force quit. During the last few months, I have created a half dozen or so screencast videos using Screenflow, which is an ( excellent) document-based app. So it looks like the space used by Time Machine and the space used by 'purgeable' are different issues.Д«y the way, think I know how I got so much in Time Machine local backups. After doing this, I have 159 GB available, 73.33 GB purgeable and the installer says I have 86 GB available and it is ready to go. Side note: Before doing this I had 89 GB available, 73.33 GB purgeable and the installer said I had only 16 GB available and needed 34 GB more. Snapshots for volume group containing disk /: So instead I did what it implied I needed to do:Д¬ode Block bash Air2:~ jk$ sudo tmutil deletelocalsnapshots /Дeleted 2 Time Machine local snapshots for volume group containing disk '/'Д¬ode Block bash Air2:~ jk$ tmutil listlocalsnapshots / Teddy's second command failed:Д¬ode Block bash Air2:~ jk$ sudo tmutil deletelocalsnapshots -002518.local Type sudo tmutil deletelocalsnapshots -002010 (substitution the ID presented before)ДЇor me, using macOS 10.15.6 beta on a MacBook Air, the answer by was close, but the actual example was simpler. You should be presented with something like this .-002010 (the number will be different) That that does not work try deleting it manually in the terminal. Wait a few minutes to allow the local snapshots to be deleted. Or choose Apple menu пЈї > System Preferences, then click Time Machine.ДeselectВ вЂњBack Up AutomaticallyвЂќ or click the Off/On switch, depending on what you see in Time Machine preferences.

Open Time Machine preferences from the Time Machine menu in the menu bar. 'If you want to delete local snapshots manually,В turn off Time Machine temporarily: (This is the issue I faced when installing) Are you using Time Machine, If so you may have local snapshots of them store locally on your Mac.

Mac system storage huge after delete