Index: tools/mkfat.py
===================================================================
--- tools/mkfat.py	(revision 04b29cae43ebea0082c3145c91095f68c7fcc25e)
+++ tools/mkfat.py	(revision a248234a30adc5681ab45d6e06d45288a41a042c)
@@ -139,5 +139,5 @@
 	char ext[3]                /* file extension */
 	uint8_t attr               /* file attributes */
-	padding[1]                 /* reserved for NT */
+	uint8_t lcase              /* file name case (NT extension) */
 	uint8_t ctime_fine         /* create time (fine resolution) */
 	uint16_t ctime             /* create time */
@@ -218,4 +218,5 @@
 		dir_entry.attr = 0x20
 	
+	dir_entry.lcase = 0x18
 	dir_entry.ctime_fine = 0 # FIXME
 	dir_entry.ctime = 0 # FIXME