.. index:: COREOS_INSTALLER

CoreOS Installer
****************

The CoreOS installer is a set of script running on the target and a
corresponding bitbake image that is used into the bootstrap process of CoreOS.

coreos-image-installer
======================

The CoreOS installer image is a single binary EFI file that include a kernel,
device tree and an initramfs with all the tools needed to install CoreOS.

An installer image is automatically built in parallel of a normal image.
This can be deactivated by setting `COREOS_IMAGE_GENERATE_INSTALLER` to 0.

The installer image build by default only a single EFI binary named
coreos-installer-MACHINE.efi. An SDCard image can be generate if
`COREOS_INSTALLER_WKS_FILE` is set to a wks file.

coreos-installer
================

The coreos-installer recipe installs some script that is used at startup
to automatically format the internal emmc of the device. It also contains
a swupdate configuration file to setup swupdate correctly for that use case.

coreos-installer-config
=======================

The coreos-installer-config recipe installs device specific configuration file
used by the coreos-installer. This includes the partitionner config file. Distro
and project based on CoreOS can change the partionning scheme or partition size
by installing their own version of this package using a `bbappend file`.