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The Apple Support Community will permanently close on November 20, 2026. Starting today, the site will no longer accept new posts and is available in a read-only state.
You can continue to find trusted guidance and support on the official Apple Support site.
We want to thank the community members who have contributed their time and expertise to help others with their Apple products.
I was hunting all the .dmg files to delete, and I show 20 "BaseSystem.dmg.x86.trustcache.jxxx...(more numbers).im4m" files in Aug, and 1 more in the last 30 days. None before August, and none since except for a document "about" theses very files. It says not to mess with them. Nothing to worry about?
MacBook Pro 15″, macOS 12.6
Nothing to worry about. Those are legitimate system files and not the .dmg files you seek to delete. If you want to seek out .dmg files for possible deletion just make sure those are the file types you seek — not just a part of their names.
Nothing to worry about. Those are legitimate system files and not the .dmg files you seek to delete. If you want to seek out .dmg files for possible deletion just make sure those are the file types you seek — not just a part of their names.
Thank you, John Galt!
MacBook Pro 15", Monterey v.12.6 - I was searching for .dmg files to delete
