JetPack 4.5 Production Release with L4T 32.5

Thanks, that worked.
What I did:

  • Create GPT partition table on USB device with only one ext4 partition with the label “APP” (the docs suggest so, but it’s probably not significant)
  • Clone the mounted and running system to the USB device (method suggested by the Arch Wiki):
    $ sudo e2image -ra -p /dev/mmcblk1 /dev/sda1 -f
  • Edit /boot/extlinux/extlinux.conf on USB device to boot from /dev/sda1 instead of /dev/mmcblk1.
    (I tried with de UUID instead of /dev/sda but it didn’t work, maybe I wrote it incorrectly).