: Significant upgrades to Photos (new editing tools) and Safari (Intelligent Tracking Prevention and autoplay blocking). System Requirements for 10.13.6
mv ~/Desktop/HighSierra.iso.cdr ~/Desktop/HighSierra.iso Macos High Sierra 10.13.6.iso
: Implemented High Efficiency Video Coding for better video compression. Apple Support Community Where to Find the Official Installer : Significant upgrades to Photos (new editing tools)
If you need to install High Sierra on a different machine, you must create a bootable drive: Apple Support Macos High Sierra 10.13.6.iso
ISO files are not the standard Apple distribution; exercise caution and ensure source is legitimate.