what is the difference between BIOS and UEFI?

 

BIOS and UEFI are both firmware that runs when a computer starts up, but they differ in some key ways.

BIOS (Basic Input/Output System) is firmware that is stored on a chip on the motherboard. It provides a way for the computer to communicate with the hardware components, such as the hard drive and keyboard, and it also provides a basic interface for configuring the computer's settings. BIOS is an older technology that has been in use since the 1970s. It is generally considered to be less secure and less versatile than UEFI.

UEFI (Unified Extensible Firmware Interface) is firmware that is stored in flash memory on the motherboard. It provides a more advanced interface for configuring the computer's settings and it also includes features such as a boot manager and support for the Secure Boot standard. UEFI is a more recent technology that is meant to replace BIOS as the primary firmware for computers.

In summary, the main difference between BIOS and UEFI is that UEFI is the more modern firmware, is capable of doing more than BIOS, and is more secure than BIOS. The way to access the firmware settings and options may also be different and some features that are found on BIOS may not be found in UEFI and vice versa.