I bought a Lenovo
It has an UEFI firmware associated with Windows 8 OS protecting it by secure Boot feature.
When i boot in recovery mode i could see an option saying about UEFI software/hardware.
I used GParted and deleted ALL its partitions.
I installed 8 again with my partitonign.
No UEFI present there and no option on the recovery menu as before.
How can i re-associate UEFI firmware with Win8 OS as it was when i bough it?
What's the reason of UEFI existance anyway? In what ways can it be usefull?