shimboot/README.md

Chrome OS RMA Shim Bootloader

This is a set of scripts for patching a Chrome OS RMA shim to serve as a bootloader for a standard Linux disto.

Current Development Roadmap:

• build the image automatically
• boot to a shell
• switch_root into an actual rootfs
• start X11 in the actual rootfs
• ui improvements in the bootloader
• load all needed drivers
• autostart X11
• host repo for patched systemd packages
• use debootstrap to install debian

Usage:

1. Grab a Chrome OS RMA Shim from somewhere. Most of them have already been leaked and aren't too difficult to find.
2. Download a Chrome OS recovery image for your board.
3. Clone this repository and cd into it.
4. Run mkdir -P data/rootfs to make a directory for the rootfs.
5. Run sudo ./build_rootfs.sh data/rootfs bookworm to build the base rootfs.
6. Run sudo ./patch_rootfs.sh path_to_shim path_to_reco data/rootfs to build the base rootfs.
7. Run sudo ./build.sh image.bin path_to_shim data/rootfs. This will generate a disk image at image.bin.
8. Flash the generated image to a USB drive or SD card.

License:

ading2210/shimboot: Boot desktop Linux from a Chrome OS RMA shim.
Copyright (C) 2023 ading2210

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.