💻 BIOS and UEFI

The BIOS and the UEFI are different. The difference is...

UEFI has more graphical and interactive look compared to BIOS. UEFI stores all data about initialisation and startup
UEFI has faster boot times
UEFI supports secure boot, which secures the device from booting from unauthorised applications
UEFI runs in 32bit or 64bit mode, whereas BIOS runs in 16bit mode
BIOS based systems use MBR partitions, while UEFI ones use GPT ones
On a GPT disk, you can use more than four partitions on each disk
GPT is also required for disks larger than 2 TB