If successful, you should see output like this appear: path/to/create_macos_recovery.sh '/Applications/Install macOS Catalina.app' If you have a macOS Catalina 10.15.0 installer application available in your Mac’s /Applications directory, run this command with root privileges: Once you have the script downloaded, run the create_macos_recovery script using root privileges with one argument: The create_macos_recovery script is available from the following location: For more details, please see below the jump. Once I verified that I could get the same results using the installer package, I wrote a script ( based on the original one I had found) to help automate the process of rebuilding a macOS Recovery volume or partition. 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.

Macos partition