summary

Here is a summary of the system initialization step

1. The system is booting through the BIOS

Images

Visual on screen

comments

comments

the BIOS tests the presence of various devices and tries to allocate the necessary resources for conflict-free operation.

1. The BIOS loads the boot loader (GRUB)

2. The user chooses his kernel and the initrd associated with it

Images

Visual on screen

comments

allows to load the operating system, under Linux, we use a bootloader, currently the most popular is GRUB, there are also other software such as lilo, etc.

1. The initrd is loaded, the kernel modules are loaded and the root (/) is mounted

Images

Visual on the screen

1. Initialization is done by / sbin / init

Images

Visual on screen