

This installer package was no longer available from the Software Update service, but a similar package named with the same dm tool was available.


The script was downloading and expanding a macOSUpd10.13.6.RecoveryHDUpdate.pkg installer package from Apple’s Software Update service in order to get access to a dm tool included with the installer package. With some more digging, I was able to figure out why. I did some research on this and found that there was a script to do this on High Sierra and Mojave, but it didn’t appear to work anymore. Was there a way to create a new Recovery volume on a macOS Catalina boot drive that didn’t have one? They were cloning drives with macOS Catalina, but their cloning process was not including the Recovery volume. I recently got an email from a former colleague, requesting assistance with a problem they were seeing.
