Boot Order Issue on Orin Nano

[DamonXcd]

I’m using the ‘JETSON ORIN NANO Developer Kit’ with Jetpack 6.0 and Jetson Linux 36.3.

I followed the official instructions to configure L4T and flash the device (Quick Start — NVIDIA Jetson Linux Developer Guide 1 documentation). During this process, I used the dtc tool to check the default boot order (UEFI Adaptation — NVIDIA Jetson Linux Developer Guide 1 documentation). The boot order was listed as “usb, nvme, emmc, sd, ufs.”

DefaultBootPriority {
    data = "usb,nvme,emmc,sd,ufs";
    locked;

The first time I inserted the R8125 module (a PCIe 2.5G network card, MAC address 88C9), the boot order had NVMe as the first priority, which matched the DTB configuration.

After removing the R8125 module and rebooting, the boot order was still normal, with NVMe as the top priority.

However, when I reinserted the R8125 module and rebooted again, an HTTPV6 boot option associated with the R8125 module suddenly appeared at the top of the boot order.

This issue occurs every time. Since we’re planning to use this in our product, it’s concerning. If a customer removes the network card and reboots the device, the boot order will likely change, causing the system to get stuck trying to boot from HTTP for several minutes.

[KevinFFF]

Hi DamonXcd,

@DamonXcd

This issue occurs every time. Since we’re planning to use this in our product, it’s concerning. If a customer removes the network card and reboots the device, the boot order will likely change, causing the system to get stuck trying to boot from HTTP for several minutes.

It seems the boot order changed due to insert/remove the PCIe network card.
You have the requirement to keep NVMe SSD as first boot device (not affected by new boot device) in your use case.

Please refer to the following thread to configure the new added boot device to the bottom.
64G AGX Orin boot Order Getting Reset (JetPack 5.1.1 - L4T r35.3.1) - #9 by KevinFFF

[DamonXcd]

Got it! The UEFI menu modification works as expected.
UEFI menu → Device Manager → NVIDIA Configuration → Boot Configuration → Add new devices to top or bottom of boot order → Bottom

Plus, I updated the L4TConfiguration.dtbo file:

NewDeviceHierarchy {
    data = [00]; // data from '01' to '00'
};

Now, after flashing, there’s no need to manually change the UEFI menu settings. It automatically sets the default, which is super convenient!
Thanks a ton for the help—I really appreciate it!

[KevinFFF]

@DamonXcd

NewDeviceHierarchy {
    data = [00]; // data from '01' to '00'
};

Yes, you can also configure it from overlay dtbo before flash.