ParticleOS: A Fully Customizable Immutable Linux Distribution

ParticleOS is a unique immutable Linux distribution that lets users build and sign their own images, giving them complete control over system configuration. Users choose the base distribution (currently Arch and Fedora are supported) and the packages they want. System updates are handled by cloning the repository and running mkosi commands. Building systemd from source is recommended to ensure all features work correctly. ParticleOS uses the user's keys for Secure Boot signing and provides detailed installation instructions, including USB drive installation and systemd-homed configuration. In virtual machines, the default root password and username are both 'particleos'.