Install, License, and Upgrade Configuration
The OcNOS Installation Guide contains the procedures for installing and licensing OcNOS, including:
•	Downloading the OcNOS installation image.
•	Downloading an OcNOS license.
•	Installing OcNOS:
•	From an FTP, HTTP, or TFTP server
•	From a USB stick 
•	Using Zero Touch Provisioning
•	Setting up a license
OcNOS supports both patch upgrades and full upgrades:
•	A patch upgrade means upgrading to a new OcNOS image with bug fixes, but without kernel changes.
•	A full upgrade means upgrading to a new OcNOS ONIE image with bug fixes along with kernel changes.
The OcNOS Installation Guide also contains the procedures for upgrading an existing installation of OcNOS either by:
•	Installing a new OcNOS version over an existing OcNOS version, which saves the existing configuration files.
•	Installing a fresh version of OcNOS, which is destructive and removes existing configuration files, SSH keys, and trial licenses. You must manually restore such items from backups as needed.