How can I reduce the amount of System Data on my Mac?

Two days ago as I was on my M1 Mac Mini running Sequoia, I got an alert that the hard drive was full.


I deleted about 12 GB of unused applications. Then yesterday my disk was full again.


I went to Settings > General > Storage and saw that my System Data (278.32 GB) is taking up more than half of my hard drive space.


Is there a safe way to reduce that?

Mac mini

Posted on Aug 26, 2025 07:08 AM

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How can I reduce the amount of System Data on my Mac?

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