I re-flashed my jetson nx board (emmc version), but it still boot directly from my 1TB ssd

The system on SSD is messed up. So I flashed the eMMC again, hoping to format the SSD and setup from scratch again. Flashing is successful. But when I reset the board, it automatically started the system on SSD, not from the eMMC.
Does anyone know how to boot from the eMMC and let me initialize the SSD again?

If this is jetpack4, then modify the boot order in the cbo.dts. Otherwise NVMe has higher boot priority.


Thank you so much for your help.

But when I flash partition CPUBL-CFG, it failed.

The command to flash is:

sudo ./flash.sh -k CPUBL-CFG --image bootloader/cbo.dtb ${BOARD} mmcblk0p1

The last output messages:;

[ 16.8042 ]
[ 16.8077 ] tegradevflash_v2 --iscpubl
[ 16.8091 ] Bootloader version 01.00.0000
[ 16.8237 ] Bootloader version 01.00.0000
[ 16.8345 ]
[ 16.8347 ] Writing partition
[ 16.8376 ] tegradevflash_v2 --write CPUBL-CFG /home/kevin/jetson/Linux_for_Tegra/bootloader/cbo.dtb
[ 16.8390 ] Bootloader version 01.00.0000
[ 16.8533 ] Writing partition CPUBL-CFG with /home/kevin/jetson/Linux_for_Tegra/bootloader/cbo.dtb [ 250 bytes ]
[ 16.8545 ] 000000000d0d090d: E> NV3P_SERVER: Failed to open partition CPUBL-CFG.
[ 16.8628 ]
[ 16.8629 ]
Error: Return value 13
Command tegradevflash_v2 --write CPUBL-CFG /home/kevin/jetson/Linux_for_Tegra/bootloader/cbo.dtb
Failed to flash/read t186ref.

Which jetpack release is it?

This one


Then you are not using jetpack4… The cbo won’t work. Please just operate the UEFI console to change boot order…

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OK, I will try

I’m sorry. Where can I find information about UEFI about boot ordering?

My first question is do you know how to get in UEFI console now…

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Hello @WayneWWW

Should I build UEFI binary to change boot order on Jetpack5.0.2?

Thank you.

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