: Use Disk Utility to format a USB drive (at least 8GB-16GB) as Mac OS Extended (Journaled) GUID Partition Map Run createinstallmedia
Apple no longer offers High Sierra on the App Store front page, but you can still download it using direct links from Apple’s servers. Macos High Sierra 10.13 5 Clover Rdr Download
Follow the prompts to install macOS High Sierra. The system will restart several times; always ensure you boot from the USB until the final Clover installation is complete on your internal drive. : Use Disk Utility to format a USB