possible to Boot piZero 2W from USB key !!!

[Pengo]

Just found out that it is possible to boot your piZero 2W from USB key

1) download & install raspberry OS and boot
2) copy /boot/bcm2710-rpi-3-b.dtb to /boot/bcm2710-rpi-zero-2.dtb
3) add 'program_usb_boot_mode=1' to /boot/config.txt
4) reboot raspberry OS

5) now you can dd whatever image you want to your USB key and it will boot (I tried with picore 3.1.0 img)

Obviously you'll have to use an OTG cable and you might want to remove the sdcard

Regards,
Pengo

[Paul_123]

It should support all boot modes supported as the RPI3

Note: that the current kernel in piCore does not properly handle Gadget mode on the Zero2W.   This feature is a late addition to the kernels at rpi, and might still have some debuggging.