Can you name the main stages of loading the Linux operating system?

Main stages of Linux booting:

1. BIOS/UEFI — initial hardware initialization and search for the boot device.
2. Bootloader — for example, GRUB; loads the Linux kernel into memory.
3. Linux Kernel — initializes hardware, mounts the root filesystem.
4. init system — starts system services and processes. In modern systems, this is systemd; in older ones, SysVinit.
5. Launching user applications — after system initialization, the graphical interface and other services are started.

Each stage is critical for the successful startup of the operating system.