Once the macOS Utilities window loads, choose and click Continue .
To download the macOS High Sierra (10.13) installer, it is best to use official Apple channels whenever possible. Apple typically provides the latest point release (10.13.6) rather than older versions like 10.13.1. Official Download Methods macos high sierra 10131 dmg
Type Y to confirm that you want to erase the volume, then press Enter. Once the macOS Utilities window loads, choose and