Glossary
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GUID Partition Table Header
The header in a GUID Partition Table. Among other things, it contains the number of
partition entries in the table and the first and last blocks that can be used for the entries.
GUID Partition Entry
A data structure that characterizes a GUID Partition. Among other things, it specifies
the starting and ending LBA of the partition.
Handle
See Device Handle.
Hardware Device Path
A Device Path that defines how a hardware device is attached to the resource domain of
a system (the resource domain is simply the shared memory, memory mapped I/O, and
I/O space of the system).
IA-32
See Intel Architecture-32.
Image
An executable file stored in a file system that complies with this specification. Images
may be drivers, applications or OS loaders. Also called an EFI Image.
Image Handle
A handle for a loaded image; image handles support the loaded image protocol.
Image Handoff State
The information handed off to a loaded image as it begins execution; it consists of the
image’s handle and a pointer to the image’s system table.
Image Header
The initial set of bytes in a loaded image. They define the image’s encoding.
Image Services
The set of functions used to manage EFI images. Includes LoadImage(),
StartImage(), UnloadImage(), Exit(), ExitBootServices(), and
EFI_IMAGE_ENTRY_POINT.
Intel Architecture-32 (IA-32)
The 32-bit and 16-bit architecture described in the Intel Architecture Software
Developer’s Manual. IA-32 is the architecture of the Intel P6 family of processors,
which includes the Intel® Pentium® Pro, Pentium II, and Pentium III processors.