What is the BIOS (Basic Input / Output System)?

Immediately after turning on your computer, it is important to make sure that there are no hardware issues that could compromise your computer’s functionality.

This blog details what the BIOS (Basic Input / Output System) is and why the BIOS is an integral part of the boot process to ensure effective and safe operation.

What is a BIOS?

The BIOS (Basic Input / Output System) is software stored in a small memory chip (firmware) on the motherboard and is the first software to run after the computer boots.

The BIOS tells your computer how to perform basic functions such as booting and keyboard control. The BIOS is also used to identify and configure computer hardware such as hard drives, floppy disks, optical drives, CPUs, memory, and related equipment.

Finally, it manages the data flow between your computer’s operating system (OS) and connected devices.

The BIOS firmware is non-volatile. This means that your settings will be saved and recoverable even after you turn off your device.

Why is the BIOS important?

In essence, the BIOS identifies, configures, tests, and connects to the computer’s hardware after the computer is turned on. (This is called the boot process.)

The BIOS is responsible for POST or power-on self-diagnosis, which is the initial set of diagnostic tests performed by the computer immediately after power-on to check for hardware-related problems.

POST is the first step in the boot sequence and is always done, regardless of whether you just restarted your computer or turned it on for the first time in a few days.

POST is independent of any particular operating system. In fact, you don’t need to install an OS to run your hard drive. This is because POST is handled by the BIOS, not the installed software.MeIf the OS is installed, POST will run before booting.

POST ensures that basic system devices, such as keyboards and other peripherals, and other hardware elements such as processors, storage devices, and memory, are present and functioning properly.

The computer will continue to boot after POST, but only if POST is successful. If POST finds a problem, you will get some error. Hopefully you can start the troubleshooting process right away.

BIOS startup

sauce: hpcwire.com.. The BIOS is responsible for the initial set of diagnostic tests performed by the computer immediately after power-up for POST, power-on self-diagnosis, and checking for hardware-related problems.

How to access the BIOS

The BIOS is accessed and configured through the BIOS setup utility. The BIOS setup utility is essentially the BIOS itself. All options available in the BIOS can be configured through the BIOS setup utility.

Unlike the operating system, the BIOS is installed from the moment the system is manufactured.

You can access the BIOS setup utility in different ways, depending on the make and model of your computer or motherboard.

What is included in the BIOS?

All modern computer motherboards include BIOS software.

Since the BIOS is part of the motherboard hardware, access and configuration of the BIOS is operating system independent.

The BIOS works outside the operating system environment, regardless of whether the operating system is installed.

BIOS maker

Some of the most popular BIOS vendors are:

  1. Phoenix Technologies
  2. IBM
  3. Dell
  4. American Megatrends (AMI)
  5. Insyde software

How to use the BIOS

The BIOS supports several hardware configuration options that can be changed via the setup utility. Saving these changes and restarting your computer will apply the changes to the BIOS and change the way the BIOS tells the hardware to work.

The general operations you can perform on most BIOS systems are:

    • Change the boot order
    • Load BIOS setup defaults
    • Flash (updated) BIOS
    • Remove the BIOS password
    • Create a BIOS password
    • Change date and time
    • Change floppy drive settings
    • Change hard drive settings
    • Change the settings of the CD / DVD / BD drive
    • Show the amount of memory installed
    • Change the NumLock status at startup
    • Enable or disable the computer logo
    • Enable or disable Quick Power On Self-Diagnostic (POST)
    • Enable or disable CPU internal cache
    • Enable or disable the BIOS cache
    • Change CPU settings
    • Change memory settings
    • Change the system voltage
    • Enable or disable RAID
    • Enable or disable onboard USB
    • Enable or disable onboard IEEE1394
    • Enable or disable onboard audio
    • Enable or disable the onboard floppy controller
    • Enable or disable the onboard serial / parallel port
    • Enable or disable ACPI
    • Change ACPI suspend type
    • Change the function of the power button
    • Change the settings when the power is turned on
    • Change the first display to be initialized in a multi-display setting
    • Reset extended system configuration data (ESCD)
    • Enables or disables BIOS control of system resources
    • Change fan speed setting
    • Display CPU and system temperature
    • Show fan speed
    • Display of system voltage

BIOS security

Cyber ​​attacks are becoming more sophisticated, and traditional safeguards have proven ineffective in the face of these advanced attacks.

Without BIOS security, hackers can easily access and manipulate computer information and take control of the system to the highest level.

These data breaches are often very difficult to detect, even with high levels of scanning and other safeguards.

There are three main methods used to protect the BIOS. password, Full disk encryptionAnd trusted platform module.

Read more about how to protect the BIOS here..

BIOS and Trenton system

In Trenton We design, manufacture, assemble, test and support all systems Here in America.

Our team of engineer experts spend countless hours BIOS customization In-house, we provide an unprecedented level of system flexibility and customization capabilities based on your exact configuration.

Control the BIOS firmware and source code to lock down and disable common abuse points for independent state-sponsored hackers.

When Advanced multi-layer cyber security technologyProtects and protects all system components and components, including the BIOS, from unauthorized access Confidential and Confidential Information At the highest level.

A secure and functioning BIOS ensures optimal performance by equipping your computer with the right tools to immediately detect hardware problems that pose a risk to operational integrity. At the edgeAnytime, anywhere.

https://www.trentonsystems.com/blog/what-is-bios What is the BIOS (Basic Input / Output System)?

Back to top button