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.
MacBook Pro 2019 running macOS 10.15.4 Catalina. There is no encryption enabled.
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).
These two posts, although somewhat more general, are closely related to my above question:
Discussing use cases of the option
--fetch-full-installer of the
softwareupdatecommand new in macOS Catalina