softwareupdate --fetch-full-installer --full-installer-version 10.13.6
The screen began to pixelate. The gray window chrome started to melt into a metallic sheen. The classic macOS font, San Francisco, shifted to Helvetica Neue.
: Obtaining the "Install macOS High Sierra.app" from the App Store or official Apple servers. : Creating a blank disk image ( ) via Terminal. : Using the createinstallmedia tool to copy the installer files to the image. Conversion : Converting the finalized ) format for compatibility with non-Apple hypervisors. 5. Security and Maintenance Note November 2020
For those needing to create a bootable installer or factory reset:
Released in July 2018, macOS 10.13.6 (Build 17G65) was the concluding update for the High Sierra lifecycle. An ISO file of this version is typically used by administrators and enthusiasts for: Virtualization : Running macOS on VMware, VirtualBox, or Proxmox. Legacy Support