diff --git a/sdk/xtdk/xtuefi.h b/sdk/xtdk/xtuefi.h
index d3d7825..d5b9e6e 100644
--- a/sdk/xtdk/xtuefi.h
+++ b/sdk/xtdk/xtuefi.h
@@ -294,6 +294,10 @@ typedef struct _EFI_PLATFORM_DRIVER_OVERRIDE_PROTOCOL EFI_PLATFORM_DRIVER_OVERRI
 typedef struct _EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL EFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL, *PEFI_BUS_SPECIFIC_DRIVER_OVERRIDE_PROTOCOL;
 typedef struct _EFI_DRIVER_FAMILY_OVERRIDE_PROTOCOL EFI_DRIVER_FAMILY_OVERRIDE_PROTOCOL, *PEFI_DRIVER_FAMILY_OVERRIDE_PROTOCOL;
 typedef struct _EFI_EBC_PROTOCOL EFI_EBC_PROTOCOL, *PEFI_EBC_PROTOCOL;
+typedef struct _EFI_MBR_PARTITION_RECORD EFI_MBR_PARTITION_RECORD, *PEFI_MBR_PARTITION_RECORD;
+typedef struct _EFI_MASTER_BOOT_RECORD EFI_MASTER_BOOT_RECORD, *PEFI_MASTER_BOOT_RECORD;
+typedef struct _EFI_GPT_PARTITION_TABLE_HEADER EFI_GPT_PARTITION_TABLE_HEADER, *PEFI_GPT_PARTITION_TABLE_HEADER;
+typedef struct _EFI_GPT_PARTITION_ENTRY EFI_GPT_PARTITION_ENTRY, *PEFI_GPT_PARTITION_ENTRY;
 
 /* EFI unions forward references */
 typedef union _EFI_DEV_PATH EFI_DEV_PATH, *PEFI_DEV_PATH;
@@ -1593,4 +1597,55 @@ typedef struct _EFI_EBC_PROTOCOL
     PEFI_EBC_GET_VERSION GetVersion;
 } EFI_EBC_PROTOCOL, *PEFI_EBC_PROTOCOL;
 
+/* MBR partition information */
+typedef struct _EFI_MBR_PARTITION_RECORD
+{
+    UINT8 BootIndicator;
+    UINT8 StartHead;
+    UINT8 StartSector;
+    UINT8 StartTrack;
+    UINT8 OSIndicator;
+    UINT8 EndHead;
+    UINT8 EndSector;
+    UINT8 EndTrack;
+    UINT8 StartingLBA[4];
+    UINT8 SizeInLBA[4];
+} EFI_MBR_PARTITION_RECORD, *PEFI_MBR_PARTITION_RECORD;
+
+/* Master Boot Record (MBR) information */
+typedef struct _EFI_MASTER_BOOT_RECORD
+{
+    UINT8 BootStrapCode[440];
+    UINT8 UniqueMbrSignature[4];
+    UINT8 Unknown[2];
+    EFI_MBR_PARTITION_RECORD Partition[4];
+    UINT16 Signature;
+} EFI_MASTER_BOOT_RECORD, *PEFI_MASTER_BOOT_RECORD;
+
+/* GUID Partition Table (GPT) header */
+typedef struct _EFI_GPT_PARTITION_TABLE_HEADER
+{
+    EFI_TABLE_HEADER Header;
+    EFI_LBA MyLBA;
+    EFI_LBA AlternateLBA;
+    EFI_LBA FirstUsableLBA;
+    EFI_LBA LastUsableLBA;
+    EFI_GUID DiskGUID;
+    EFI_LBA PartitionEntryLBA;
+    UINT32 NumberOfPartitionEntries;
+    UINT32 SizeOfPartitionEntry;
+    UINT32 PartitionEntryArrayCRC32;
+} EFI_GPT_PARTITION_TABLE_HEADER, *PEFI_GPT_PARTITION_TABLE_HEADER;
+
+/* GUID Partition Table (GPT) partition entry */
+typedef struct _EFI_GPT_PARTITION_ENTRY
+{
+    EFI_GUID PartitionTypeGUID;
+    EFI_GUID UniquePartitionGUID;
+    EFI_LBA StartingLBA;
+    EFI_LBA EndingLBA;
+    UINT64 Attributes;
+    UINT16 PartitionName[36];
+} EFI_GPT_PARTITION_ENTRY, *PEFI_GPT_PARTITION_ENTRY;
+
 #endif /* __XTDK_XTUEFI_H */