Glossary of Terms – What Is BIOS?

Do you know what is BIOS?

Do you know why the operating system can control the computer?

It is also known as system BIOS, ROM BIOS or PC BIOS.

Then it loads the boot loader to initializes Windows or any other operating system you install.

It brings life to the computer, the term bios is a pun in Greek, means life.

It is a non-volatile firmware which means its controls wont disappear or change even after power has been removed.

Now the operating systems do not use BIOS after loading but directly accesses the hardware components.

At first, the BIOS firmware was stored in the ROM chip on the PC motherboard.

How to Access BIOS?

you could configure various controls in the BIOS setup screen.

configs like the hardware configuration of the computer, system time and startup sequence.

The setting results will be saved to the memory on your motherboard.

After this, you start your setup, the BIOS will configure the PC with the saved parameters.

The BIOS setup utility is accessed in various ways depending on your box or motherboard.

When the computer is turned on, BIOS will start and execute aPower-On Self-Test(POST).

If failed to find it, there will be no boot machine warning on the display.

Thats when the operating system takes over control of the computer.