# Create a disk image from the installer hdiutil create -o /tmp/HighSierra -size 8g -layout SPUD -fs HFS+J -type SPARSE # Mount the sparse image hdiutil attach /tmp/HighSierra.sparseimage -mountpoint /Volumes/install_build # Copy installer to the volume sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/install_build --nointeraction # Convert to ISO hdiutil convert /tmp/HighSierra.sparseimage -format UDTO -o ~/Desktop/HighSierra.iso
Here is a deep review of the OS and a critical analysis of the file format. macos high sierra 10.13.5.iso
macOS High Sierra 10.13.5 Update was a significant release that primarily introduced support for Messages in iCloud # Create a disk image from the installer
Before looking for an ISO, ensure your hardware is compatible. High Sierra supports the following Mac models: : Late 2009 or newer MacBook Pro : Mid 2010 or newer MacBook Air : Late 2010 or newer Mac mini : Mid 2010 or newer iMac : Late 2009 or newer Mac Pro : Mid 2010 or newer Minimum Specs : Memory : 2 GB RAM (8 GB recommended). Storage : 14.3 GB of available disk space for the upgrade. How to Get a macOS High Sierra 10.13.5 ISO Storage : 14
If you don’t own a Mac, your only legal path is to buy a used Mac that came with High Sierra or use virtualization software that supplies a pre-made virtual disk (e.g., VMware Fusion’s macOS “Easy Install”).