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Can I delete the Install macOS app in Applications?

/Applications/Install macOS Sequoia.app
/Applications/Install macOS Tahoe.app

By Parsa Nasirimehr

Yes, once you don't need it to install macOS. An Install macOS app is a complete installer, usually well over 10 GB. Running it to upgrade normally removes it afterwards, but one you downloaded and never ran stays. Keep one only if you make bootable USB installers.

How big it gets

On the Mac we measured, one Mac on macOS 27: none in Applications, since the installers it ran were removed after upgrading.

What it is

What writes itThe App Store, Software Update's full installer, or Apple's website, when you download a whole macOS version.
Why it staysAn installer you downloaded but never ran, or copied to Applications yourself, stays until you delete it.
When to keep itTo make a bootable USB installer with createinstallmedia, or to install the same version on several Macs.
Comes back?No, but the App Store downloads it again whenever you need it.

How to clear it

  1. Open Applications in Finder and look for apps named Install macOS followed by a version name.
  2. Move them to the Trash and empty it.
  3. Check Downloads too: macOS and app installers saved as .dmg or .pkg files stay there.

What you lose: Nothing, unless you wanted to make a USB installer.

With Scrubs: Scrubs's Quick Wins lists Install macOS apps in Applications with their size, and moves them to the Trash in one step, with ⌘Z to undo. Download Scrubs; scanning is free.

Related folders

Downloads folderHow do I clean up the Downloads folder on my Mac?~/Library/CachesCan I delete the caches in ~/Library/Caches on my Mac?Purgeable spaceWhat is purgeable space on a Mac, and how do you free it?

Sizes measured with du on 10 November 2026. Paths and commands apply to macOS 15 and later. See also how to free up disk space on a Mac.

About the author: Parsa Nasirimehr is a mobile app developer who builds Scrubs, a disk map for the Mac. Spotted something wrong? Write to support@getscrubs.app.