The NetApp HCI Compute Node (Bootstrap OS) is the initial operating system used when you first boot up a new node or replacement. The NetApp HCI compute node is configured in dual boot using the Linux...The NetApp HCI Compute Node (Bootstrap OS) is the initial operating system used when you first boot up a new node or replacement. The NetApp HCI compute node is configured in dual boot using the Linux GRUB bootloader, allowing you to boot either the Bootstrap OS or the ESXi OS. Thus, any vulnerabilities found in the NetApp HCI Compute Node (Bootstrap OS) do not have an impact on the deployed environment, as the Bootstrap OS is not active once ESXi is installed and running.