How to netboot a pc download#

Use -kernel_arg argument in netboot_firmware_settings.py.

To specify this, you can do one of the following approaches: The boot options ( cmdline) for the netboot kernel. This will append the argument ( cros_board=) in kernel boot options ( cmdline) for you.Дefault value: board name ( CHROMEOS_RELEASE_BOARD) of the device.

Use -board argument in netboot_firmware_settings.py.

Prepare netboot firmwareДЇind firmware blob image-$ in the kernel boot options ( cmdline).

Assume that eth2 is set up 192.168.200.1/24ДЄssume that the board we are going to use is zork, and the model name is morphiusДЄssume that the Linux machine is running Ubuntu (otherwise the network config files might need to be changed according to your Linux distribution).

Assume that the ethernet device on Linux machine is eth2.

PrerequisitionДЄ Linux machine, which will be running TFTP and factory serverД¬onnect DUT and Linux machine by ethernet,

Specify netboot settings (e.g., factory server IP).Дetails of each component can be found in corresponding sections in this document.

Setup a factory server with image resources.

Setup a TFTP server to deploy netboot kernel.

Flash the devices with netboot or dev firmware to enter netboot mode.

Therefore, you need to setup the following components to do a netboot imaging:

How to netboot a pc download#

Download images (with cros_payload) from the factory server in vmlinuz kernel.Download vmlinuz kernel from TFTP server in netboot mode.Enter netboot mode with netboot or dev firmware.The netboot imaging flow contains the following steps: Proto builds), when images might be changed during the build, so you don't want to pre-flash it by copy machine.

Also, this can be used in some early phase of projects (e.g. This is helpful when you need to re-flash ChromeOS images frequently. And the kernel will download ChromeOS images from factory server. Netboot firmware is a special firmware that instead of loading kernel from storage, it downloads a light weight kernel (vmlinuz) from TFTP server. Chromebook Netboot Setup Guide What is Netboot?