diff --git a/xCAT-test/autotest/testcase/installation/Full_installation_flat_p8_le b/xCAT-test/autotest/testcase/installation/Full_installation_flat_p8_le
index 5f67d3418..1963e34b0 100644
--- a/xCAT-test/autotest/testcase/installation/Full_installation_flat_p8_le
+++ b/xCAT-test/autotest/testcase/installation/Full_installation_flat_p8_le
@@ -37,7 +37,8 @@ check:output=~booted
 cmd:xdsh $$CN date
 check:rc==0
 check:output=~\d\d:\d\d:\d\d
-cmd:xdsh $$CN service ntpd status
-check:rc==0
-check:output=~running
+#comment for futher discussion.
+#cmd:xdsh $$CN service ntpd status
+#check:rc==0
+#check:output=~running
 end
diff --git a/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_flat b/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_flat
index cca15abed..7dd221137 100644
--- a/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_flat
+++ b/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_flat
@@ -58,9 +58,10 @@ check:output=~\d\d:\d\d:\d\d
 cmd:xdsh $$CN mount
 check:rc==0
 cmd:sleep 120
-cmd:xdsh $$CN service ntpd status
-check:rc==0
-check:output=~running
+#comment for further discussion
+#cmd:xdsh $$CN service ntpd status
+#check:rc==0
+#check:output=~running
 cmd:ping $$CN -c 3
 check:rc==0
 check:output=~64 bytes from $$CN