For me, using macOS 10.15.6 beta on a MacBook Air, the answer by @teddy06550 was close, but the actual example was simpler. Weird. Teddy's second command failed:
Code Block bashAir2:~ jk$ sudo tmutil deletelocalsnapshots 2020-06-15-002518.local |
Password: |
2020-06-15-002518.local is not a valid disk |
So instead I did what it implied I needed to do:
Code Block bashAir2:~ jk$ sudo tmutil deletelocalsnapshots / |
Deleted 2 Time Machine local snapshots for volume group containing disk '/' |
com.apple.TimeMachine.2020-06-15-002518.local |
com.apple.TimeMachine.2020-06-22-183122.local |
and, voila…
Code Block bashAir2:~ jk$ tmutil listlocalsnapshots / |
Snapshots for volume group containing disk /: |
Air2:~ jk$ |
No more local backups.
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. 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. Well, indeed 159-73=86. So it looks like the space used by Time Machine and the space used by "purgeable" are different issues.
By the way, think I know how I got so much in Time Machine local backups. During the last few months, I have created a half dozen or so screencast videos using Screenflow, which is an ( excellent) document-based app. Some of them may have been left dangling because I did not want to save them and force quit. That may or may not have made the problem worse.
Anyhow, thanks very much to Teddy for the tmutil tip. I think this is a bug – that Time Machine local backups can use such a huge amount of space with absolutely zero visibility. Am I wrong or should I file a bug? Or maybe is this fixed a Big Sur?
I am having the same issue, my MacBook says I only have 18 gb’s of free space and I pretty much deleted all the huge apps off my computer and nothing changed?? I’m confused!
Same issue here.
As all the others, I moved everything I could to iCloud. Don't have the Time Machine enabled. Still can't install.