Finding a "macOS High Sierra 10.13.6 ISO" is a common task for those looking to revive older hardware or set up virtual machines, but it requires caution since Apple doesn't officially distribute macOS in ISO format. The Official Source: Why ISOs Aren't "Standard" Apple officially provides macOS installers as files from the Mac App Store
Apple does not provide official ISO downloads. To create a genuine 10.13.6 ISO: macos high sierra 10136iso
: Reinstalling the OS on older Mac hardware that does not support Mojave or later. Bootable Media : Creating USB installers for system recovery. 2. Key Technical Features Apple File System (APFS) Finding a "macOS High Sierra 10
If you try to create a bootable USB on a newer Mac (Silicon), you may encounter a "Killed: 9" error. This usually means the system is preventing you from running the old createinstallmedia tool on modern hardware. If you'd like, I can help you: Troubleshoot specific Terminal errors during ISO creation. Configure VirtualBox or VMware settings for High Sierra. Check if your specific Mac model is compatible. Which of these Bootable Media : Creating USB installers for system recovery
macOS installers are distributed as: