Recently my MacBook Pro (Retina, 13-inch, Early 2015) with 251 GB Flash Storage and Mac OS Catalina 10.15.7 started complaining about not enough space left on the hard disk. So I started deleting stuff. But to my surprise that didn't free up memory on the hard disk. Using the Storage Management App I saw, that for example deleting an Application reduced the storage used by Applications, but increased the storage in the category Others.
As an example see the first screenshot before deleting Microsoft Word
and the next screenshot after deleting Microsoft Word
I also looked at the issue using the terminal. Before deleting Word I saw this
❯ sudo du -m -d 1 -c 6632 ./usr 3 ./bin 1 ./sbin 4229 ./Library 0 ./com.apple.TimeMachine.localsnapshots 135562 ./System 1 ./.fseventsd 4657 ./private 0 ./.vol 89408 ./Users 11305 ./Applications 0 ./opt 1 ./dev 1713 ./Volumes 0 ./cores 253506 . 253506 total
After deleting Word I got
6632 ./usr 3 ./bin 1 ./sbin 4229 ./Library 0 ./com.apple.TimeMachine.localsnapshots 134207 ./System 1 ./.fseventsd 4663 ./private 0 ./.vol 89409 ./Users 9942 ./Applications 0 ./opt 1 ./dev 1713 ./Volumes 0 ./cores 250796 . 250796 total
It seems to me that the total of
du is reduced by twice the amount, because the
\Application folder got smaller, but also the
\System folder got smaller, because we also have
\System\Volumes\Data\Application pointing to the same directory.
I tried to follow tips on the internet like deleting localsnapshots from time machine, but I simply have none. I also tried to rebuild the spotlight index, but it also didn't help. I started in recovery mode and checked with disk util and saw the following: Snapshot is invalid
But diskutil still thinks everything is ok and didn't repair anything.
What could be causing this strange situation? And what could I do to get more free space finally? Or is my only option left deleting the whole disk and reinstalling everything again?