Backup your AIR-T¶

In this tutorial we show you how to create a copy of your AIR-T by backing up and restoring the memory partitions (eMMC). This method can be useful when software configurations, programs, and files must be replicated on other boards of the same model.

Note: procedure applicable to AIR7101 and AIR7201 products.

Prerequisites¶

To create and restore a backup image you will need:

• Both the source and destination AIR-T units must be of the same model and have the same version of AirStack installed
• Downloaded build of AirStack used for flashing to host laptop (must be the same version that's on the units)
• Required free disk space on the flashing computer: at least 2x the size of the eMMC you're backing up.
• Also review the prerequisites listed in the standard documentation for re-imaging the OS on an AIR-T: AirStack Imaging Procedure

Setup¶

1. Connect micro-USB port on AIR-T to USB port on host laptop
2. Place the AIR-T in recovery mode using the steps listed here: Recovery Method

Procedure on Host Laptop¶

1. Use "flash.sh" low-level flashing script included with the AirStack build to generate a backup of the filesystem on the AIR-T.

   cd <top level of AirStack release>
   cd Linux_for_Tegra
   sudo ./flash.sh -r -k APP -G backup.img jetson-tx2 mmcblk0p1
   

2. Move the backup into the AirStack build, replacing the factory-default AirStack filesystem with your backup.

   mv backup.img bootloader/system.img
   

3. Remove the uncompressed backup image to save on disk space, it's not necessary for re-flashing.

   rm backup.img.raw
   

4. Restore the backup by using the flashing utility as if you were re-imaging a board with AirStack. This is equivalent to the flashing step #7 in AirStack Imaging Procedure

   cd <top level of AirStack release>
   airt_flash/scripts/flash-systemimg.py -b ./Linux_for_Tegra --brd jetson-tx2
   

5. After restoring a backup, you should be able to log in to the AIR-T normally.

Notes¶

• If you do not have enough space on your host laptop it will likely not explicitly tell you this. It will fail quickly and your AIR-T will restart.