The UEFI (Unified Extensible Firmware Interface) is the firmware code of a chip on the motherboard that provides functions in addition to the basic input / output system (BIOS).
The main function of the UEFI is to start the hardware components and launch the operating system of a computer when we turn it on.
For example, UEFI can provide additional graphical menus and system information on a computer, as well as basic diagnostics on both computers and tablets.
This is possible, since the UEFI works with the BIOS to initialize the computer or tablet hardware before transferring control of the hardware to the operating system. So it has the possibility to optimize and decrease the speed of your CPU
The UEFI can also load and display storage device software programs to provide more functionality, such as more detailed system information and more extensive hardware diagnostics.
Therefore, it is clear that both the UEFI and the BIOS are the technologies that control the hardware of our computer when we start it. But these two don’t exactly do the same thing. What is the difference between the two?
Although both are firmwares, that is, a portion of code that is stored in a separate memory located on the motherboard of your computer. Both the UEFI and the BIOS contain the instructions that control the operations of the circuits in our computer.
The main function of the BIOS is to start the hardware components and launch the operating system of a computer when we turn it on. It also loads the power and temperature management functions of the computer. But if you want to know in more detail what it is, how it works and what the BIOS is used for, you can learn it here.
When you turn on your computer, the BIOS takes care of starting, configuring, and verifying that your computer’s hardware is in good condition, including RAM , hard drives, motherboard, or graphics card.
Once the process is finished, select the boot device and proceed to start the operating system, giving it control of the computer.
But to be able to access the UEFI you first need to learn how to access or enter the configuration
UEFI is basically the successor to BIOS. It is a renewed firmware and with a more modern system. Although the functions are similar to that of its predecessor, it has substantial improvements such as a much more modern graphical interface, a secure boot system, a higher boot speed or support for hard drives larger than 2TB.
However, there are those who decide to disable the UEFI of the BIOS for operational and security reasons . What is this about and how to do it? Read on to find out.
Why do some decide to disable the BIOS UEFI?
The UEFI has a built-in security system called Secure Boot . This security layer, installed by default on the computer’s motherboard, prevents certain unsigned or certified programs or applications from being executed when the computer starts up, before Windows starts.
How to disable UEFI BIOS?
UEFI also prevents you from detecting the hard drive during installation or post-installation of some operating systems. And it is possible to do it by ourselves. You just have to follow the 4 steps that you will see below.
First, we must press the power button and immediately afterwards, the “Esc” button and in the next menu, choose the SCU option.
Then we will be in the BIOS. Go to the option “Boot” and using the directional arrows on the keyboard, we will go down until we see the option “Boot Type” and we will select it by pressing “Enter”.
Once there, you can choose between three different ways to boot: Dual, Legacy, and UEFI. Select the “Legacy” option and thus our computer will no longer have UEFI mode enabled.
Once the process is finished, you must exit the BIOS saving changes by clicking on the “Save and Exit” option. By following these simple steps you can disable UEFI and stop having problems installing some applications. Still, this is a delicate process so be sure to follow the steps well.
Therefore, it is impossible for certain programs such as Linux for example, to be executed on our computer. For this reason, some decide to disable the UEFI of the BIOS to have more freedom in this regard. And in case you don’t have UEFI you will be happy to know that you can configure the BIOS to improve boot .