Select the external drive from the list and hit the arrow/Enter. Performance Tip
If you have a modern Mac (Intel with T2 Security Chip or M1/M2/M3 Apple Silicon), you may need to allow booting from external media. Shut down your Mac. install mac os on external drive
Running your operating system from an external SSD is fast, safe, and doesn't touch your primary data. Here is everything you need to get it running. 1. What You’ll Need Before you start, gather these essentials: Select the external drive from the list and
Whether you’re testing a new beta version, troubleshooting a failing internal SSD, or simply need a portable workstation you can plug into any Mac, installing macOS on an external drive is one of the most useful "power user" moves you can learn. Running your operating system from an external SSD
Select the of your external disk from the sidebar. Click Erase and use the following settings: Name: macOS External (or whatever you like)
Once the download finishes, the installer might try to launch automatically. Do not click "Continue" yet. If it opens, quit the installer from the menu bar. 4. Step 3: Install macOS onto the External Drive
Hold the until "Loading startup options" appears. Select Options > Continue . Go to Utilities > Startup Security Utility .