There is post that at least describes in detail how to enable this beta feature: https://www.jeffgeerling.com/blog/2020/im-booting-my-raspberry-pi-4-usb-ssd htt

There is post that at least describes in detail how to enable this beta feature: https://www.jeffgeerling.com/blog/2020/im-booting-my-raspberry-pi-4-usb-ssd https://www.jeffgeerling.com/blog/2020/im-booting-my-raspber...