To install a 64-bit Raspberry OS on a Pi 4 board can be achieved by
- download the zip file from here
- unzip and write content to empty SSD as you would for an SD card, gives two partions (a FAT boot and a EXT4 rootfs)
- connect the SSD to the RPi4 (e.g. put the SSD in an USB3.0 enclosure and connect to the USB3 ports of the RPi4)
- remove any card in the card slot of the RPi4!
- power on, wait a minute, system reboots, wait another couple of minutes, then answer the setup questions.
This gives, with some luck, a fast running RPI4 with a very large
rootfs partition to fill the SSD. Installation of XFCE4 speeds things further up!
- Why would the approach sometimes fail and has to repeated? In my experience, success after 1 or 2 trials.
- When is a update of the rpi-eeprom necessary? is this automatically done when a full-upgrade is done?
- Is it necessary to enable the USB boot? It can be done - on a running RPi4 with