How to Read/Write file/partition in cboot

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
1

Hi,
I’m using Xavier NX L4T 32.6.1. I want to ckeck the boot times is first or odd , even.
So I want to read/write a file in storage to check.
Is there any way help me to do that?

3

What does that mean you want to check boot times? Why not just do that in the userspace?

4

I want to check that boot is the first boot → power off → second boot → power off → third boot → power off → …
We want to verify product stability that it doesn’t lose data or device is out of action when it power off many times.
I will discuss it (in the userspace) with my team member. Thanks.

5

I think userspace is better since a “stable boot up” should go into the rootfs… but not just cboot.

Also, it is not 100% guarantee a failure boot would just stuck in cboot.

We have A/B redundancy mechanism here. Maybe it can help you.

https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/bootloader_update_agx_tx2.html#

7

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