Jason Snell on Twitter: "Did some work in macOS Catalina today on a Retina MacBook Air booted from an external SSD. Portability was ensured by worst possible method: duct tape. https://t.co/PMuYOeP58i" /
I Installed macOS Catalina on a external ssd and now I can't boot into recovery without it attached. | MacRumors Forums
![with windows system AND CATALINA USB External SSD High Speed SSD Applicable to A2159 A1932 A1990 A1989 A1707 A1706 | Lazada PH with windows system AND CATALINA USB External SSD High Speed SSD Applicable to A2159 A1932 A1990 A1989 A1707 A1706 | Lazada PH](https://lzd-img-global.slatic.net/g/p/4fe54c1e9017f6e3f5b54cbaa3388403.jpg_720x720q80.jpg_.webp)