Extensible Firmware Interface Specification
132 12/12/00 Version 1.02
5.3.5.4 File Path Media Device Path

Table 5-25. File Path Media Device Path

Mnemonic
Byte
Offset
Byte
Length Description
Type 0 1 Type 4 – Media Devi ce Path.
Sub-Type 1 1 Sub-Type 4 – File Path.
Length 2 2 Length of this structure in bytes. Length is 4 + n bytes.
Path Name 4 nUnicode Path string including directory and file names. The
length of this string n can be determined by subtracting 4
from the Length entry. A device path may contain one or
more of these nodes. The complete path to a file can be
found by concatenating all the File Path Media Device Path
nodes. This is typically used to describe the directory path
in one node, and the filename in another node.
5.3.5.5 Media Protocol Device Path

The Media Protocol Device Path is used to denote the protocol that is being used in a device path at

the location of the path specified. Many protocols are inherent to the style of device path.

Table 5-26. Media Protocol Media Device Path

Mnemonic
Byte
Offset
Byte
Length Description
Type 0 1 Type 4 – Media Devi ce Path.
Sub-Type 1 1 Sub-Type 5 – Media Protocol.
Length 2 2 Length of this structure in bytes. Length is 20 bytes.
Protocol GUID 4 16 The ID of the protocol.