[Question] Error when running ./flash_jetson_external_storage.sh

[thorbjornsomod]

Describe the issue
We get the error output attached when running the flash_jetson_external_storage.sh script against an Nvidia Jetson TX2 NX with an NVMe SSD attached via a carrier board. Before running the script we are putting the TX2 in recovery mode, and we are able to see it listed as "Nvidia Corp." when doing a lsusb.

Which version of Ubuntu on the Host machine
Ubuntu version: Ubuntu 18.04.6 LTS

What version of L4T/JetPack
L4T/JetPack version: Latest via this repo.

Which Jetson
Jetson: TX2 NX

To Reproduce
Steps to reproduce the behavior:
git clone https://github.com/jetsonhacks/bootFromExternalStorage.git
cd bootFromExternalStorage
./install_dependencies.sh
./get_jetson_files.sh
./flash_jetson_external_storage.sh

Expected behavior
We expected the script to complete successfully.

Additional context
We are using a custom carrier board. However, for now we just want to flash the NVMe SSD attached to the Nvidia Jetson TX2 NX with the default OS.

short_logs.txt
long_logs.txt

[jetsonhacks]

NVIDIA only supports boot from external storage on the Xavier series Jetson (AGX Xavier, NX Xavier). The TX2 has a different software stack. You can ask more questions on the official NVIDIA Jetson forums, where a large group of developers and NVIDIA engineers share their experience: https://forums.developer.nvidia.com/c/agx-autonomous-machines/jetson-embedded-systems/70

[thorbjornsomod]

The official docs claim that NVIDIA supports booting from an NVMe for the Jetson TX2 series:
https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/flashing.html#wwpID0E0LN0HA

[jetsonhacks]

The scripts here flash using initrd

https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/flashing.html#wwpID0E0PI0HA

It has a statement that it is only for Xaviers, which is what I've referred to in the past.

I have found that the documentation on this subject is circular, and self referential. Since I do not have a TX2 NX, the subject is difficult for me to explore.