Can I Delete macOS?
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Put it in the trash by dragging it to the trash, pressing Command-Delete, or by clicking the “File” menu or the Gear icon > “Move to Trash” If you see any other “Install macOS” such-and-such programs that you don’t want anymore go ahead and delete those as well as they are enormous files.

Can I delete install macOS?

It is safe to delete, you will just be unable to install macOS Sierra until you re-download the installer from the Mac AppStore. Nothing at all except you would have to download it again if you ever need it. After install, the file would usually be deleted anyway, unless you move it to another location.

Can I delete old Mac OS?

No, they aren’t. If it’s a regular update, I wouldn’t worry about it. It’s been a while since I remember there was an OS X “archive and install” option, and in any case you would need to select it. Once it’s done it should free up the space of any old components.

Elena Rostova

Elena Rostova

Lead Health, Wellness & Medical Journalist

Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.

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