macOS 10.13+ High Sierra Imaging Changes

With Apple implementing APFS and adding Firmware to the OS Updates on macOS 10.13 High Sierra there is a new way to wipe and install a fresh version of macOS.

In the simplest form you will no longer be able to use FileWave Lightning or the Network Imaging Server, instead be utilizing the startosinstall command in the OS Installer via a Fileset.

More information on the startosinstall command: https://support.apple.com/en-us/HT208020

FileWave has developed a streamlined method for upgrade macOS devices from 10.13.4 and above! You can find this new method in the FileWave Foundry under the 201 course that covers the new "imaging" practice with videos and examples to follow along with and on our Knowledge Base:





Knowledge Base Article

Wipe and Install macOS 10.13.4+



The Fileset you get from the Foundry will be sending out a script that will have the following command in it. The --eraseinstall flag will fully wipe the device and install High Sierra fresh but this is only supported on 10.13.4 and above devices:

1 /tmp/Install\ macOS\ High\ Sierra.app/Contents/Resources/startosinstall --eraseinstall --agreetolicense



You can also add

to the command to prevent migration to Apple's AFPS. Some have observed this helps with some Fusion, HDD (Hard Disk Drive AKA magnetic spindle) or non-apple installed SSDs



If you are wanting to simply upgrade to High Sierra without wiping the device you can also follow the steps in our KB Article titled "High Sierra Upgrade"
https://fwkb.atlassian.net/wiki/spaces/KB/pages/4327569/macOS+Upgrades+or+Erasing