Index: dll/win32/kernel32/client/file/disk.c
===================================================================
--- dll/win32/kernel32/client/file/disk.c	(revision 70661)
+++ dll/win32/kernel32/client/file/disk.c	(working copy)
@@ -455,6 +455,7 @@
     {
     case FILE_DEVICE_CD_ROM:
     case FILE_DEVICE_CD_ROM_FILE_SYSTEM:
+    case FILE_DEVICE_DVD:
         return DRIVE_CDROM;
     case FILE_DEVICE_VIRTUAL_DISK:
         return DRIVE_RAMDISK;