--- wikisrc/users/ryoon/how_to_install_netbsd_amd64_to_macbook_air_11_inch.mdwn	2012/09/23 04:27:22	1.9
+++ wikisrc/users/ryoon/how_to_install_netbsd_amd64_to_macbook_air_11_inch.mdwn	2013/05/04 14:59:53	1.11
@@ -1,5 +1,7 @@
 # How to install NetBSD/amd64 current on MacBook Air 11 inch (mid 2012)
 
+XXX THIS DOCUMENT IS OBSOLETE AFTER <http://mail-index.netbsd.org/source-changes/2013/04/28/msg043382.html>.
+
 For older MacBook, please read [how to install netbsd on an apple macbook with core2duo](http://wiki.netbsd.org/tutorials/how_to_install_netbsd_on_an_apple_macbook_with_core2duo/)
 
 This tutorial is based on it.