A tool for creating custom Raspberry Pi OS images and the official Raspberry Pi OS images.
pi-gen is a tool used to create the official Raspberry Pi OS images and custom images based on Raspberry Pi OS. It automates the process of building bootable OS images for Raspberry Pi devices through a modular, stage-based system. The tool solves the problem of manually configuring and assembling OS images by providing a reproducible and customizable build pipeline.
System administrators, embedded developers, and hobbyists who need to create custom Raspberry Pi OS images for deployment, testing, or specialized use cases. It is also used by the Raspberry Pi Foundation for generating official OS releases.
Developers choose pi-gen for its deep integration with Raspberry Pi hardware, modular architecture that allows fine-grained customization, and support for both 32-bit and 64-bit builds. Its stage-based approach and Docker compatibility make it a reliable and portable solution for creating production-ready OS images.
Tool used to create the official Raspberry Pi OS images
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The sequential stage system (e.g., stage0 to stage5) allows precise customization of OS components, from bootstrap to full desktop, enabling tailored builds like Lite or Full images.
Environment variables like IMG_NAME, ENABLE_SSH, and FIRST_USER_PASS provide granular control over image settings, as detailed in the Config section.
Docker support enables builds on non-Debian systems, though it requires kernel-level services like binfmt for ARM emulation, adding portability.
The stage-based process ensures consistent, automated image generation, ideal for deployment across multiple Raspberry Pi devices.
WORK_DIR stores complete copies for each stage, consuming tens of gigabytes, making it unsuitable for low-storage environments.
Requires specific Debian packages or Docker, with potential issues like binfmt_misc errors that can halt builds on non-standard systems.
Configuring and modifying stages demands familiarity with Debian systems and shell scripting, with no GUI or simplified workflows for beginners.