I have a rough workaround implemented that lets me use jetson-io.py with two APP partitions. In /opt/nvidia/jetson-io/Jetson/board.py, edit line 134 from:
if partlabel == label:
to
if partlabel == label and mount == '/':
If the mounting location for the primary APP partition is default (“/”) then this should ignore the other APP partition. Although, the custom dtb outputted from jetson-io will only be read if the system reads from the right device. I tested this on both NVME and eMMC and jetson-io.py loads properly for both, but only changes done on the NVME are implemented.
The more appropriate thing for me to do is to wipe the rootfs and APP partition from the eMMC, but I’m not sure how… any advice?