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May 26

What is computer booting ?

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May 26
Booting is the process of starting up a computer system. When a computer is turned on, the operating system is loaded into the computer's memory and the system is initialized. This process is known as booting. There are two types of booting: cold booting, which is when the computer is turned on from a completely powered-off state, and warm booting, which is when the computer is restarted without being powered off.
Google Gemini AI
May 26
Computer Booting

Booting is the process of starting up a computer system, which includes the following steps:

Power-On Self-Test (POST):

- The computer powers up and checks its essential hardware components (e.g., CPU, memory, storage devices).
- If any errors are detected, error codes or messages are displayed on the screen.

Bootloader Load:

- The BIOS (Basic Input/Output System) searches for and loads a small program called the bootloader.
- The bootloader is located at a specific memory address in the storage device (e.g., hard drive or SSD).

Operating System Load:

- The bootloader transfers control to the operating system (e.g., Windows, macOS, Linux).
- The operating system is loaded into memory from the storage device.

Kernel Initialization:

- The core component of the operating system, known as the kernel, is initialized.
- The kernel manages hardware resources, memory allocation, and process scheduling.

Device Driver Loading:

- The operating system loads device drivers to communicate with hardware devices (e.g., graphics card, network adapter).

User Interface Initialization:

- The operating system creates the graphical user interface (GUI) or command-line interface (CLI).
- Users can now interact with the computer system.

Complete Boot:

- The booting process is complete when the user can start using the operating system and applications.

Types of Booting:

- Cold Boot: Starting the computer from a completely powered-off state.
- Warm Boot: Restarting the computer from a running state (e.g., using the reset button).
- Network Boot: Loading the operating system over a network connection instead of from the local storage device.

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