If you have the Install macOS High Sierra.app file extracted from your DMG or downloaded from the App Store, Apple’s built-in command-line tool is the cleanest method. Plug your USB flash drive into your Mac.
macOS High Sierra 10.13.6 was a stable, mature release that brought essential updates, including APFS (Apple File System) optimizations, Safari 12, and improved security. It is the final supported OS for many 2009–2011 Macs and is vital for: Reviving older Mac hardware. Installing on virtual machines (VMware/VirtualBox). Creating bootable installers for emergencies. download macos high sierra 10.13 6 dmg file
: This file is an update , not a full standalone installer. It will only work if you already have macOS High Sierra (10.13 to 10.13.5) installed on your Mac. If you have the Install macOS High Sierra
: A pre-made disk image can be found on the macOS High Sierra 10.13.6 directory for those needing a raw .dmg file. It is the final supported OS for many