add exfat to partitions.cpp
diff --git a/partition.cpp b/partition.cpp
index cf7aab8..c9b10da 100644
--- a/partition.cpp
+++ b/partition.cpp
@@ -359,6 +359,7 @@
 		File_System == "vfat" ||
 		File_System == "ntfs" ||
 		File_System == "yaffs2" ||
+		File_System == "exfat" ||
 		File_System == "auto")
 		return true;
 	else