You can create this using either built-in tools or third-party applications.
: You need a USB flash drive with at least 16GB of capacity. Use Disk Utility to format it as Mac OS Extended (Journaled) with a GUID Partition Map . Create the Installer : macos_high_sierra_10.13
To "make paper" of macOS High Sierra 10.13, you can create a bootable installer on a USB drive. This is often referred to as a "boot disk" or "installer drive." Creating a Bootable Installer (The "Paper" Copy) You can create this using either built-in tools
: Use the createinstallmedia command in Terminal. For High Sierra, the command typically looks like this (assuming your drive is named "MyVolume"): sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/MyVolume . macos_high_sierra_10.13