Persistence Across Bootburn Flashing Using Persistent Partition
NVIDIA DRIVE® OS provides persistence across bootburn flashing
      for user data and metadata partitions. The persistence works by reserving a partition in
      bootburn that is not written or modified in the flashing process. Due to this effect, the data
      in this partition is completely unchanged across bootburn flashing. After the filesystem is
      loaded, the user data partition is mounted on /home, and the persistent
      metadata is overlayed on /etc.