Boot Raspberry Pi 4 from USB storage device
by Exaga from LinuxQuestions.org on (#58GVP)
It might be 3 weeks after the event, but I've only today found out that booting the RPi4 from a USB storage device is now very possible. This is great news for me.
The Raspberry Pi 4 eeprom needs re-programming, which is a very simple process. Just download the latest bootcode update - write the contents to a microSD card - boot the RPi4 with it - wait until the green LED flashes on/off rapidly and constantly - power off.
Raspberry Pi 4 EEPROM latest update 03 September 2020: https://github.com/raspberrypi/rpi-e...20.09.03-138a1
I've tested with a 16GB USB stick running the Slackware ARM installer and it works like a charm. Next I'll be connecting a SSD and playing around with that. I know from previous experience that compiling on a USB3 connected SSD is ~10-25% quicker than using my fastest microSD cards on the RPi4.


The Raspberry Pi 4 eeprom needs re-programming, which is a very simple process. Just download the latest bootcode update - write the contents to a microSD card - boot the RPi4 with it - wait until the green LED flashes on/off rapidly and constantly - power off.
Raspberry Pi 4 EEPROM latest update 03 September 2020: https://github.com/raspberrypi/rpi-e...20.09.03-138a1
I've tested with a 16GB USB stick running the Slackware ARM installer and it works like a charm. Next I'll be connecting a SSD and playing around with that. I know from previous experience that compiling on a USB3 connected SSD is ~10-25% quicker than using my fastest microSD cards on the RPi4.