How do I remove over 100GB of system data on a desktop Mac?

Hi can anyone give me a definitive answer for removing over 100gig of system data from my desktop Mac. I have removed caches and checked the library. Thanks in advance.


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iMac 24″, macOS 15.3

Posted on Feb 23, 2025 3:51 AM

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Feb 23, 2025 5:24 AM in response to StephenCyprus

That data is controlled by the OS. You cannot do much with that. I have found that booting into recovery, erasing the drive and reinstalling the OS and then migrating your data will reduce this number but it will start to increase again over time. I've done this process several times with success.

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How do I remove over 100GB of system data on a desktop Mac?

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