What is Boot?

When the computer is turned on, the computer runs a set of instructions; this process is referred to as Booting. It is also known as boot up or sometimes startup. During booting, the computer loads the Operating System and all the files required for system operation into main memory. Also, this process examines all the hardware and Software connected or installed with the system.

When this process will be completed, you can see the windows desktop as well as run applications on the computer system. All the files that are stored in the ROM Chip are also loaded in the Booting Process to run the computer system. Also, during the booting process, the system reads all of the information from the files contained in the ROM Chip, as well as all of the instructions included in these files. After the machine has booted up, all of the information will be shown.

Types of Booting

There are two kinds of booting, which are discussed below:

1. Warm Booting: Warm booting is a booting approach that allows the system to resume in the middle of a scenario. Generally, when the System Starts from the initial state is referred to as warm Booting, which is also known as rebooting. When the user hits the Power Button, the system returns to its original state, which means it will read all of the instructions from the ROM and the Operating System will be loaded into the system automatically. When you install new software and hardware on the system, rebooting may need at this time. Also, the system requires a reboot when it fails to respond properly or behaves abnormally, as well as to set changes in software or hardware settings.
2. Cold Booting: When you are running the computer system and it Automatically Starts is called Cold Booting, for example, the system will automatically restart due to Light Fluctuation. In this condition, there are more chances of damaging the system. Also, some files can be damaged because the system will not be starting from its initial State, and files are not Properly Stored in the System. And, Operating System will be gets loaded automatically into the System.

How to boot

If the computer is in good operating order, it will start up automatically after being turned on. If an issue is discovered that prevents the computer from starting, an error message is shown.

A computer system cannot boot if it has a black screen or cannot turn on. In this case, you must first fix the power issue before attempting to boot.

What happens when a computer is booting?

When a computer boots up, it goes through a series of processes to verify that the appropriate software is installed and that the computer hardware functions properly. Computer performs several tasks at time of botting:

• The computer starts up the power supply when the user presses a power button of the computer, which later offers power to the other hardware located inside the computer case.
• A self-diagnostic, often known as a POST, is used to see if all of the computer's hardware is operating correctly.
• BIOS examines the boot loader, which is stored in the first sector of the hard disc.
• The boot loader searches the hard disc for an operating system and then begins loading that operating system. (For example, Linux, Mac OS X, or Windows).
• The hardware components are located inside the computer case, which is interacted with and used by the operating system when hardware drives are loaded.
• If the operating system has been set, you will see a login screen where you may input a username and password to log in.
• Any extra software programmes configured, known as startup programmes, are loaded before the operating system. Typical starting applications include printer management or antivirus software.

Failure during boot

You may receive a boot failure error if your computer cannot boot. You will get an indication from this error that the computer is not passing a device or POST in a computer like memory or hard drive has failed. Also, during the post, which hardware is failing, you may also hear a beep code to identify this.

When the operating system files cannot be loaded into memory because they are corrupted or not located, an error message appears. The blue screen or error message tells you why the operating system can't be loaded.

Also, due to any other reason, if a hardware driver cannot be loaded or is corrupted; you may see errors. Even if the hardware driver is unable to be loaded, the operating system may continue to load. However, it will have issues with such hardware.