Clarify Signature field in EFI_PARTITION_ENTRY structure.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9287 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 6 insertions, 3 deletions

diff --git a/MdePkg/Include/Protocol/DevicePath.h b/MdePkg/Include/Protocol/DevicePath.h
index e10f5ba2a5..579ab89205 100644
--- a/MdePkg/Include/Protocol/DevicePath.h
+++ b/MdePkg/Include/Protocol/DevicePath.h
@@ -777,8 +777,7 @@ typedef struct {
   /// Describes the entry in a partition table, starting with entry 1.

   /// Partition number zero represents the entire device. Valid

   /// partition numbers for a MBR partition are [1, 4]. Valid

-  /// partition numbers for a GPT partition are [1,

-  /// NumberOfPartitionEntries].

+  /// partition numbers for a GPT partition are [1, NumberOfPartitionEntries].

   ///

   UINT32                          PartitionNumber;

   ///

@@ -790,7 +789,11 @@ typedef struct {
   ///

   UINT64                          PartitionSize;

   ///

-  /// Signature unique to this partition

+  /// Signature unique to this partition:

+  /// If SignatureType is 0, this field has to be initialized with 16 zeros.

+  /// If SignatureType is 1, the MBR signature is stored in the first 4 bytes of this field.

+  /// The other 12 bytes are initialized with zeros.

+  /// If SignatureType is 2, this field contains a 16 byte signature.

   ///

   UINT8                           Signature[16];

   ///