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IT Support & Hardware · Foundational

macOS App Installation

Installing Mac software via the App Store, .dmg disk images, or .pkg installer packages.

Definition

A .dmg is a disk image usually containing an .app that is dragged to Applications; a .pkg is an installer package that runs scripted installs. Uninstalling a drag-installed app is done by moving it to the Trash. MDM tools deploy .pkg files silently.

Example

Open the .dmg, drag the app to Applications, then eject the image.

Exam tip

Know .dmg (disk image), .pkg (installer), and .app (application bundle).

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