The UEFI is a specification that defines a software interface between an operating system and platform firmware. UEFI is a more secure replacement for the older BIOS firmware interface, present in some personal computers, which is vulnerable to malware that performs attacks during startup or power on self-test (POST) processes.
Windows operating systems support firmware revisions that are based on the UEFI version 2.0 or later specification on 64-bit platforms and Intel Itanium platforms. Windows also supports firmware revisions that are based on the EFI Version 1.10 specification on Intel Itanium platforms.
Note The Windows ADK is required when deploying the Windows operating system to a computer with UEFI 2.3.1.
Windows supports a subset of the functionality that is defined in the UEFI 2.0 specification. Windows implementations do not explicitly check against higher revisions of the firmware. The operating system supports higher revisions of the firmware if they contain the necessary support for Windows 7, Windows Server 2008 R2, and Windows Server 2008.
Note The UEFI partitions must be formatted using the FAT32 file system. The NTFS file system is not supported for UEFI boot.
By default, MDT creates the appropriate partitions to support UEFI. If you create custom partition configurations, ensure that you follow the recommendations described in the Review the Default Partition Configuration Created by MDT section.
For more information, see the following resources: