
Then, the BIOS looks for the EFI partition to get instructions on starting and interacting with Windows. However, BIOS will start first and wake up the hardware and firmware. When we boot a PC, the OS doesn’t start right then. A Windows system without UEFI BIOS includes those boot info in the primary partition.

Only Windows devices using the UEFI BIOS will have the EFI partition. EFI system partition is generally formatted with FAT32 and around 100MB, containing essential files and utilities such as boot loaders, device drivers, data files, system utilities, and BitLocker data. Can anybody help me?” What is an EFI partition and where can I find it?ĮFI, short for (Extensible Firmware Interface) system partition is necessary for OS booting. However, I’m a computing novice and don’t know any possible solution. I know the partition is necessary if I want to boot Windows 11. I have tried to figure out the cause and finally, I found it was because the EFI partition was accidentally deleted. My Windows 11 laptop can’t boot ever since I upgraded the OS this morning. The EFI partition is missing on Windows 11!
