diff --git a/sbin/mount_cd9660/mount_cd9660.8 b/sbin/mount_cd9660/mount_cd9660.8
index 3504920922cc..07f7e6f4a38c 100644
--- a/sbin/mount_cd9660/mount_cd9660.8
+++ b/sbin/mount_cd9660/mount_cd9660.8
@@ -1,4 +1,4 @@
-.\" $NetBSD: mount_cd9660.8,v 1.13 2000/07/16 08:20:04 jdolecek Exp $
+.\" $NetBSD: mount_cd9660.8,v 1.14 2001/01/09 20:51:26 augustss Exp $
 .\"
 .\" Copyright (c) 1993, 1994
 .\"     The Regents of the University of California.  All rights reserved.
@@ -132,6 +132,14 @@ Same as
 .Xr unmount 2 ,
 .Xr fstab 5 ,
 .Xr mount 8
+.Sh CAVEATS
+For some cdroms the information in the Rock Ridge extension is wrong
+and the cdrom needs to be mounted with "norrip".  A sign that something
+is wrong is that the
+.Xr stat 2
+system call returns
+.Er EBADF
+causing, e.g., "ls -l" to fail with "Bad file descriptor".
 .Sh BUGS
 The cd9660 filesystem does not support the original "High Sierra"
 ("CDROM001") format.