Jetson & Embedded Systems

Robotics & Edge Computing Jetson Systems Jetson Orin Nano
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1

Board: Jetson Orin Nano Developer Kit 8GB
BSP: Jetson Linux 36.4.4
Rootfs: 36.4.4
SD Card: SanDisk Extreme Pro 128GB A2 UHS-I V30
Flash Method: l4t_initrd_flash.sh
Host OS: Ubuntu

Error:
External storage device (/dev/mmcblk1) might be
unavailable or not work correctly.

Flash command used:
sudo ./tools/kernel_flash/l4t_initrd_flash.sh
–external-device mmcblk1p1
-c tools/kernel_flash/flash_l4t_external.xml
–showlogs
jetson-orin-nano-devkit
mmcblk1p1

SD card is brand new and properly inserted.
Recovery mode confirmed via lsusb showing APX.
Please help.

3

*** Please note that this reply is generated by LLM automatically ***

The issue you’re experiencing with the Jetson Orin Nano Developer Kit 8GB is related to flashing the device with an external storage device. The error message indicates that the external storage device (dev/mmcblk1) might be unavailable or not work correctly.

To troubleshoot this issue, let’s break down the steps and compare them with the provided documentation.

  1. Recovery Mode: You’ve confirmed that the device is in recovery mode by running the lsusb command and seeing the APX device listed. This is correct, as the device should be in recovery mode for flashing.
  2. Flash Command: The flash command you’re using is:

sudo ./tools/kernel_flash/l4t_initrd_flash.sh --network usb0 --showlogs -p “-c bootloader/generic/cfg/flash_t234_qspi.xml” -i ./ekb.key --no-flash jetson-orin-nano-devkit internal
sudo ROOTFS_ENC=1 ./tools/kernel_flash/l4t_initrd_flash.sh --network usb0 --showlogs --no-flash --external-device nvme0n1p1 -S 16GiB -c ./tools/kernel_flash/flash_l4t_t234_nvme_rootfs_enc.xml --external-only --append -i ./ekb.key jetson-orin-nano-devkit external
sudo ./tools/kernel_flash/l4t_initrd_flash.sh --network usb0 --showlogs --flash-only

   However, the error message indicates that you're using a different command:
   ```bash
sudo tools/kernel_flash/l4t_initrd_flash.sh external-device mmcblk1p1 -c tools/kernel_flash/flash_l4t_t234_external.xml showlogs jetson-orin-nano-devkit mmcblk1p1

The difference in commands might be causing the issue. Try using the original command to see if it resolves the problem.

  1. External Storage Device: The error message suggests that the external storage device (dev/mmcblk1) might be unavailable or not work correctly. Make sure that the SD card is properly inserted and recognized by the system. You can check the SD card status by running the lsblk command.

  2. SD Card: You’ve mentioned that the SD card is brand new and properly inserted. However, it’s possible that the SD card is not compatible with the device or has some issues. Try using a different SD card to see if it resolves the problem.

  3. Host OS: You’re using Ubuntu as the host OS, which should be compatible with the flashing process.

To resolve the issue, try the following steps:

  1. Verify that the SD card is properly inserted and recognized by the system.
  2. Use the original flash command to see if it resolves the problem.
  3. Try using a different SD card to see if it resolves the problem.
  4. Make sure that the device is in recovery mode before flashing.

If none of these steps resolve the issue, please provide more details about the error message and the flashing process, and I’ll be happy to help further.

*** Please give the thumbs up if you get answers you like. Or provide feedback to help us improve the answer. ***

4

i am using the same SDcard which is SanDisk Extreme Pro 128GB A2 UHS-I V30
and i have succesfully resolved the issue by changing the external storage device name to mmcblk0p1

5

Glad to know you fixed the issue, thanks for your update!