What is BIOS and how are my settings saved?

You may be wondering what the BIOS is and how its settings are saved? The BIOS, an acronym for Basic Input/Output System, is one of the most fundamental components for the correct operation of any computer. This software, which is built into the motherboard, has the function of carrying out a series of essential tasks when turning on the device. Its main functions include initializing the hardware, performing diagnostic tests, and loading the operating system from the appropriate storage device. In other words, the BIOS serves as the “initial boot” that brings everything else to life. In this article, you will learn precisely how to do this. What is BIOS and how are my settings saved?

Although it has evolved over time and in many cases has been replaced by its successor, the UEFI (Unified Extensible Firmware Interface), the BIOS is still essential in many computers. This essential program not only ensures the correct operation of the computer, but also offers the possibility of tweak some aspects of the hardware in a custom way. Let's go with the article on what is the BIOS and how are its settings saved?

Main functions of the BIOS

The BIOS has several critical responsibilities that are executed within a short period of time after the computer is turned on. These include the following:

• Initialize the hardware: The BIOS verifies that components such as the CPU, RAM, hard drive, and other peripherals are functioning properly before passing control to the operating system.
• Perform POST tests (Power-On Self Test): These basic tests ensure that there are no errors in essential components. If any faults are detected, the BIOS issues signals in the form of beeps or visual codes.
• Configure the boot system: It is responsible for loading the operating system from the device selected as primary, be it a hard drive, a USB drive, or even a network.

In addition to these essential functions, some advanced versions of the BIOS allow you to perform specific settings such as overclocking, memory adjustments, and power management. It's becoming clearer what the BIOS is and how your settings are saved. Let's dig deeper.

How to preserve BIOS settings?

One of the most common questions is what is BIOS and how are BIOS settings preserved? BIOS settings are stored on a special ROM (read-only) memory chip located on the computer's motherboard. This chip is designed to be write-resistant, ensuring that settings are not lost even if the computer is turned off.

However, the BIOS also relies on a small battery called a CMOS battery. This battery supplies power to a special memory that is responsible for settings such as time, date, and power-on order. When the battery runs out of power, the BIOS settings are usually reset to default values, which could cause minor inconveniences such as having to reconfigure the system time. By now, you know a lot more about what the BIOS is and how its settings are saved. Well, wait until the end and you will know everything about the BIOS.

Accessing and Configuring the BIOS

FOR To modify the BIOS settings, you need to access its menu. This process may vary slightly depending on the manufacturer, but generally involves the following steps:

1. Restart your computer and during startup, press a specific key (such as Delete , Esc , or F2 ), which is usually indicated on the screen.
2. Once inside the menu, use the arrow keys to navigate and make any necessary adjustments.
3. Save the changes by pressing the F10 key and reboot the system to apply the settings.

It is important to be careful when making changes to the BIOS, as incorrect settings can cause problems with booting or with the performance of your computer. If you want to know even more about your PC, we recommend this other article from Tecnobits in which we talk about how Windows changes its updates to avoid critical errors.

Precautions and tips when modifying the BIOS

Before making adjustments, it is essential to be clear about the impact that these changes may have. Changing advanced options without the necessary knowledge could result in problematic situations.If you have doubts about your actions, it is best to seek the guidance of a trained professional.

Also, keep in mind that updating the BIOS is not always necessary. This process should only be performed if the computer or motherboard manufacturer indicates that it is essential, either due to compatibility issues with new hardware or to fix critical errors.

Importance of BIOS in modern computers

Although what is BIOS and how are your settings saved remains a relevant question, in recent years many devices have adopted UEFI, which offers greater capabilities and a more modern graphical interface. However, BIOS is still essential on many computers, especially older ones.

The UEFI It differs from the BIOS mainly in its ability to handle larger hard drives., its faster boot speed and enhanced security features. However, the traditional BIOS is still robust enough to serve its purpose in most cases.

Now that you know everything about what the BIOS is and how its settings are saved, this information will allow you to better appreciate the importance of this element in the correct operation of a computer. This software, although small, is extremely powerful as it ensures that your computer starts without problems. and operate efficiently. Although your settings are retained in ROM and CMOS, remember that making adjustments without proper knowledge can be risky.

Therefore, in case you want to make changes to the BIOS, it is advisable to do detailed research and if you have any doubts, It is advisable to seek help from an expert. Understanding the BIOS and its features will not only allow you to customize your computer, but will also provide a better understanding of the interaction between the hardware and software on your computer.