💻 BIOS and UEFI
The BIOS and the UEFI are different. The difference is...
UEFI vs BIOS#
- 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
| MBR | GPT | |
|---|---|---|
| Maximum Partition Capacity | 2TB | 8.4ZB |
| Maximum Partition Number | 4 primary partitions | 128 primary partitions |
| Firmware support | BIOS | UEFI |
| Operating system support | Windows 7 and older | Windows 8/9.1/10 |