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EFI Firmware File System Specification v0.9OverviewThis specification defines the core code that is required for an implementation of the Firmware
File System (FFS) of the Intel® Platform Innovation Framework for EFI (hereafter referred to as the “Framework”). This FFS specification does the
following:• Describes the basic components of the FFS• Defines basic operations that may be performed with the FFS• Provides code definitions for
FFS-related data types and structures that are architecturally required by the Intel® Platform Innovation Framework for EFI Architecture Specification•
Provides pseudo code that describes methods for initializing the FFS and accessing file prior to the FFS being initializedTarget AudienceThis
document is intended for the following readers:• Independent hardware vendors (IHVs) and original equipment manufacturers (OEMs) who will be implementing
firmware components that are stored in firmware volumes• BIOS developers, either those who create general-purpose BIOS and other firmware products or those
who modify these products for use in Intel® architecture–based productsRead the full EFI Firmware File System Specification.