Efi Device Path Displayed As A Name Space - Intel Extensible Firmware Interface Specification

C.6 EFI Device Path as a Name Space
Figure C-3 shows the EFI Device Path for the example system represented as a name space. The
Device Path can be represented as a name space, but EFI does support manipulating the Device
Path as a name space. You can only access Device Path information by locating the
DEVICE_PATH_INTERFACE
handle.
PCI (ISA Bridge)
Dev, Func
ACPI (Legacy Floppy)
_HID PNP0303
_UID 0
Figure C-3. EFI Device Path Displayed As a Name Space
Version 1.02
from a handle. Not all the nodes in a Device Path will have a
Root
/
ACPI (Root PCI Bridge)
_HID PNP0A03
_UID 0
PCI (IDE Device)
Dev, Func
Message (ATA)
Primary
Maste
2
1
Media (Hard Drive)
Partition 1
12/12/00
Device Path Examples
ACPI (Root PCI Bridge)
_HID PNP0A03
_UID 1
PCI (PCI to PCI Bridge)
Dev, Func
PCI (Device)
Dev, Func
3
Key
Device Path Node
with EFI Handles
Device Path Node
only in other device paths
Example Platform
1
Reference
343