Install Macos On External Drive -

The installer will open automatically once downloaded. 4. Install macOS on the External Drive Run the Install macOS app you just downloaded. Click Continue and agree to the terms. When asked to select a disk, click Show All Disks . Select your External Drive (labeled "macOS External"). Click Install .

Hold the until "Loading startup options" appears. Select Options > Continue . Go to Utilities > Startup Security Utility . install macos on external drive

Modern Macs have security settings that block external booting by default. For Apple Silicon (M1, M2, M3): Shut down your Mac. The installer will open automatically once downloaded