I found lots of other similar questions here and on the internet, but no answer seems to make sense in my case.

Yet, after a few months, space slowly shrank to 11.5 GB.

About three months ago I made an accurate clean up of my hard disk using 'Clean my Mac' to detect junk and manually deleted the actually useless files (caches, old files, unused apps.

Time machine is enabled, I did the latest backup yesterday on an external hard disk, but available space did not change, even after a restart.

My question is: what is eating up disk space behind the curtains? Is this a software related problem or an hardware related problem? (since my SSD is one decade old, is there some mechanism that marks SSD sectors as unavailable when they break or become unreliable?) That sums up to roughly 67 GB used in total. Using OmniDiskSweeper v1.11 I get this instead Looking at 'About This Mac > Storage' I see the following ('Documents' is 31.77 GB, blue is 'Apps' with 6.69 GB, dashed is 'Other Volumes in Container' with 3.88 GB)

Right now the free space is 11.5 GB out of a total capacity of 128 GB.

In particular, the available space keeps (slowly) decreasing, even if I do not use additional storage space. My computer is a late 2011 MacBookPro with an original 128 SSD running MacOs 10.13.6.įor some years now the total of the used disk space plus the available disk space has been slowly shrinking.

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