diff --git a/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm b/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm
index 2b8a4997e..4e87d180a 100644
--- a/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm
+++ b/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm
@@ -1,5 +1,7 @@
 start:Ubuntu_diskless_installation_flat_x86_vm
 os:Linux
+cmd:copycds $$ISO
+check:rc==0
 cmd:makedns -n
 check:rc==0
 cmd:makedhcp -n