Activating the Custom Partition Functionality
First, you must activate the Custom Partition functionality. It is deactivated by default.
- Open the Setup and go to System > Firmware Customization > Custom Partition > Partition. 
- Check Enable Partition. 
- Set the Size to "10M" Megabyte). 
- Leave the Mount Point at - /custom 
- 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: 
