First, you must activate the Custom Partition functionality. It is deactivated by default.

  1. Open the Setup and go to System > Firmware Customization > Custom Partition > Partition.
  2. Check Enable Partition.
  3. Set the Size to "10M" Megabyte).
  4. Leave the Mount Point at /custom

  5. Click Apply.
    The Custom Partition is created on the device's mass storage, which is indicated by a message.
    When the Custom Partition is created and successfully mounted, the message reads:

Next Step

>> "Hello World" Program