Index: qemu-0.12.3/block/vvfat.c
===================================================================
--- qemu-0.12.3.orig/block/vvfat.c
+++ qemu-0.12.3/block/vvfat.c
@@ -868,7 +868,9 @@ static int init_directories(BDRVVVFATSta
     {
 	direntry_t* entry=array_get_next(&(s->directory));
 	entry->attributes=0x28; /* archive | volume label */
-	snprintf((char*)entry->name,11,"QEMU VVFAT");
+	// snprintf((char*)entry->name,11,"QEMU VVFAT");
+	snprintf(entry->name, sizeof(entry->name), "QEMU VV");
+	snprintf(entry->extension, sizeof(entry->extension), "FAT");
     }
 
     /* Now build FAT, and write back information into directory */