Sorry. I should have refreshed the page first. I did check Mail, and there was nothing there for this. There is now! Thanks for chiming in!
>----o----<
20-25%? Isn't that excessive? I recall using Diskeeper on a VAX back in the mid 90s and the manual recommended 20%. And now, 3 decades later, with drives enormously bigger and faster and highly advanced, we're still at the 20% level?
>----o----<
Anyway, the problem is fixed. Apparently, I accidentally started a screen recording, and it kept going until it nearly filled the disk. Finally, it disappeared from the Library folder and was moved to the Desktop, as the OS must have decided it was done!
In both cases, I found the file using EtreCheckPro.
I'm back in business!
asdf

zxcv