Fails to boot on successful flash for machine jetson-nano-emmc on changing rootfs size about tegra-demo-distro HOT 2 CLOSED

I don't think it's documented very well, but the NVIDIA bootloaders have some restrictions on placement of boot partitions. In particular, the starting LBA has to have a particular alignment. The details vary among the different chip models, and I don't remember them off the top of my head. The tools don't necessarily enforce the requirements, either.

So the problem is that you can't set ROOTFSPART_SIZE to any arbitrary value, since that will throw off the alignment of the other partitions, including the ones that the bootloaders need to find (unless you hand-craft the flash layout XML file). Try sticking to an even multiple of 1MiB, as I think that will be safe in all cases. For example, replacing your 4700000000 with 4699717632 (4482 MiB) worked fine in my tests.

from tegra-demo-distro.

@madisongh Thank you for your help on this. I was able to make it work as you mentioned by sticking to even multiples of 1MiB.
I have updated the documentation here to inform about the same. Please let me know if this needs to be updated somewhere else as well or if you want to do it differently.

from tegra-demo-distro.