diff --git a/headers/private/storage/DiskDeviceDefs.h b/headers/private/storage/DiskDeviceDefs.h
new file mode 100644
index 0000000000..89cc8e6d1b
--- /dev/null
+++ b/headers/private/storage/DiskDeviceDefs.h
@@ -0,0 +1,40 @@
+//----------------------------------------------------------------------
+//  This software is part of the OpenBeOS distribution and is covered 
+//  by the OpenBeOS license.
+//---------------------------------------------------------------------
+
+#ifndef _DISK_DEVICE_DEFS_H
+#define _DISK_DEVICE_DEFS_H
+
+#include <SupportDefs.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef int32 partition_id;
+typedef int32 disk_system_id;
+typedef int32 disk_job_id;
+
+// partition flags
+enum {
+	B_PARTITION_IS_DEVICE		= 0x01,
+	B_PARTITION_MOUNTABLE		= 0x02,
+	B_PARTITION_PARTITIONABLE	= 0x04,
+	B_PARTITION_READ_ONLY		= 0x08,
+	B_PARTITION_MOUNTED			= 0x10,	// needed?
+	B_PARTITION_BUSY			= 0x20,
+	B_PARTITION_DESCENDANT_BUSY	= 0x40,
+};
+
+// disk device flags
+enum {
+	B_DISK_DEVICE_REMOVABLE		= 0x01,
+	B_DISK_DEVICE_HAS_MEDIA		= 0x02,
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	// _DISK_DEVICE_DEFS_H