The Android booting process involves 5 stages: 1. The bootloader loads the kernel from flash memory into RAM. 2. The kernel initializes the system and loads drivers. It then launches the init process. 3. Init mounts filesystems and runs scripts to set up services. It also loads properties and launches the Zygote process. 4. Zygote preloads classes and resources. It forks to create new processes like the System Server using copy-on-write. 5. The System Server starts core system services. When complete, Android has finished booting and is ready for use.