How to install macOS at your organization

If you're the system administrator for your organization, you can choose from a variety of macOS installation methods.

Before you install, make sure that your Mac is connected to the Internet, which allows installation of both macOS and any firmware updates available for your Mac.

Use Apple Business Manager or Apple School Manager

If you use Apple Business Manager or Apple School Manager to manage devices, you can use the Software Update commands to install macOS.

Use the 'startosinstall' method

If you're installing from and to your computer's startup disk, you can use the startosinstall command in the Contents/Resources directory of the macOS installer.

  • To specify more packages to install after macOS, add the --installpackage flag. To build these packages, use the productbuild(1) command.
  • If you're installing macOS 10.13.4 or later and the volume is part of an APFS container, you can use the --eraseinstall flag to erase your current startup disk first. This process erases all volumes in the APFS container unless you also add the --preservecontainer flag, available in macOS Mojave 10.14.
  • For more information about startosinstall, add the --usage flag to the command.

Use another installation method

These installation methods work whether or not macOS is currently installed on the target volume:

If you erased the target disk, choose one of these three methods.

Learn more

Apple doesn't recommend or support monolithic system imaging as an installation method. The system image might not include model-specific information such as firmware updates.

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