diff --git a/sdk/include/psdk/winioctl.h b/sdk/include/psdk/winioctl.h
index a121c3eec2b..d494338f87c 100644
--- a/sdk/include/psdk/winioctl.h
+++ b/sdk/include/psdk/winioctl.h
@@ -306,6 +306,13 @@ typedef struct _PREVENT_MEDIA_REMOVAL {
     ((PartitionType) == PARTITION_XINT13) )
 #endif
 
+#if (_WIN32_WINNT >= 0x0500)
+#define GPT_ATTRIBUTE_PLATFORM_REQUIRED          0x0000000000000001
+#define GPT_BASIC_DATA_ATTRIBUTE_READ_ONLY       0x1000000000000000
+#define GPT_BASIC_DATA_ATTRIBUTE_SHADOW_COPY     0x2000000000000000
+#define GPT_BASIC_DATA_ATTRIBUTE_HIDDEN          0x4000000000000000
+#define GPT_BASIC_DATA_ATTRIBUTE_NO_DRIVE_LETTER 0x8000000000000000
+#endif
 
 #define DISK_LOGGING_START   0
 #define DISK_LOGGING_STOP    1