Question
I'm trying to create a bootable installer for High Sierra 10.13.6 under Catalina. To create the installer app I invoked the softwareupdate
command this way:
sudo softwareupdate --fetch-full-installer --full-installer-version 10.13.6
Obviously the download started. Then after reporting a progress of about 60% it failed:
Downloading and installing 10.13.6 installer
Install failed with error: Update not found
Any idea what went wrong here? Any advice is highly welcome.
Hardware-Software-Environment
MacBook Pro 2019 running macOS 10.15.4 Catalina. There is no encryption enabled.
Background
As discussed in the first two posts mentioned below you may start with the recipe from this article How to upgrade to macOS High Sierra. This provides you with theApp Store link. At least for me, when initiating the download from a MacBook Pro running OS X 10.11.6 El Capitan, this resulted in creating only the stub installer (as described, among others, in the references below).
References
These two posts, although somewhat more general, are closely related to my above question:
How do I download macOS High Sierra for offline install?
macOS High Sierra media installer
Discussing use cases of the option --fetch-full-installer
of the softwareupdate
command new in macOS Catalina
https://derflounder.wordpress.com/2019/10/28/downloading-macos-installers-with-updated-signing-certificates-on-macos-catalina/
wget
(which is not a default manOS utility), to download the full installer of macOS as a single application bundle directly from Apple as if what's typically present in/Applications
as when done from the App Store's download is complete.