.. index:: COREOS_INSTALLER

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

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

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

The CoreOS image installer results in an image contairing only a single binary
EFI file. This EFI file includes a kernel, a device tree and an initramfs with
all (and only) the tools needed to install CoreOS.

The installer image is not automatically built in parallel of a normal image.
This can be changed by setting `COREOS_IMAGE_GENERATE_INSTALLER` to 1 in the
image file (as it is done for example in coreos-image-all-features.bb).

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

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

The coreos-installer recipe installs scripts that are used at startup to
automatically format the internal emmc of the device. The recipe 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 partitioner config file. Distros
and projects based on CoreOS can change the partioning scheme or partition size
by installing their own version of this package using a `bbappend file`.