Introduction

Herein mainly introduces Jetson Nano modules with 16GB eMMC memory according to official nvidia tutorial. All information is subject to the official website of nvidia.

Reference Links

• https://developer.nvidia.com/embedded/learn/get-started-jetson-nano-devkit#write
• https://docs.nvidia.com/jetson/archives/l4t-archived/l4t-3261/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/flashing.html#wwpID0E01O0HA

Hardware Preparation

• Jetson Nano module, corresponding power supply and heatsink
• Ubuntu18.04 computer host
• U disk with USB interface or mobile hard disk (USB3,0 is recommended)
• a USB data cable (Micro USB interface, for transmitting data)

Software Preparation

• Install SDK Manager and flash system configuration for Jetson Nano.
  • Tutorial: SDKM flash Nano
  • Record the address of the downloaded HW Imager during the flashing process for later.

• Connect the U disk to the nano, and check the device number of it in the nano, such as sda.

ls /dev/sd* 

• Insert the U disk to the ubuntu computer.
• Check the device number of the U disk on the computer, such as sdb.

sudo lsblk -p -d | grep sd 

• Note: If your U disk has been partitioned before, it is recommended to format and adjust it to a partition on another computer first.
• Format the USB drive to ext4

sudo mkfs.ext4 /dev/sdb 

• Note: Please refer to your actual situation for the specific device number. Some devices may be sda or others.
• Mount U disk

sudo mount /dev/sdb /mnt 

• Enter the HW Imager address and copy the rootfs.

cd <path>/Linux_for_Tegra/rootfs/ 

• Note: Please refer to your actual address. For example, the author's path command:

cd/home/ubuntu/nvidia/nvidia_sdk/JetPack_4.6.1_Linux_JETSON_Nano_TARGETS/Linux_for_Tegra/rootfs/ 

• Copy the file system to the U disk.

sudo tar -cpf - * | ( cd /mnt/ ; sudo tar -xpf - ) 

• After finishing the copy, unmount the U disk, (note: don't pull it out).

sudo umount /mnt 

• Set up nano as recovery mode (refer to the flashing tutorial), then connect it to the ubuntu computer and input the flashing command.

cd ../
csudo ./falsh.sh jetson-nano-emmc sda

• Note: Sda should be filled in as the actual device number of the U disk recognized by nano in the first step.
• After flashing, disconnect the nano and the U disk. Insert the U disk to the Nano before powering on it, and follow the prompts to complete the configuration.