--- usr/libexec/os-probes/50mounted-tests.orig	2018-11-22 22:58:34.980032815 +0000
+++ usr/libexec/os-probes/50mounted-tests	2018-11-22 22:59:25.050369548 +0000
@@ -38,6 +38,9 @@
 elif [ "$types" = swap ]; then
 	debug "$1 is a swap partition; skipping"
 	exit 1
+elif [ "$types" = iso9660 ]; then
+	debug "$1 is a iso9660 partition; skipping"
+	exit 1
 elif [ "$types" = crypto_LUKS ]; then
 	debug "$1 is a LUKS partition; skipping"
 	exit 1