Download page Activating the Custom Partition Functionality.
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: