Ensure that the dtbs subdirectory is created

Development_Environment/Boards/HowTo/Rebuilding_the_Kernel.rst

@@ -66,10 +66,10 @@ Installing the Kernel
 ---------------------
 
 Connect the development board to a network and find its IP address. Log in as
-``root`` and create the ``boot2`` directory inside the existing ``/boot``
-directory::
+``root`` and create the ``boot2`` directory and `dtbs` subdirectory inside the
+existing ``/boot`` directory::
 
-   mkdir /boot/boot2
+   mkdir -p /boot/boot2/dtbs
 
 From the workstation, copy the kernel and device tree binary to the board,
 replacing ``pureos`` with the IP address of the development board::