diff --git a/xCAT-test/autotest/testcase/installation/reg_linux_diskless_installation_hierarchy b/xCAT-test/autotest/testcase/installation/reg_linux_diskless_installation_hierarchy
index 0bb2aa173..187640357 100644
--- a/xCAT-test/autotest/testcase/installation/reg_linux_diskless_installation_hierarchy
+++ b/xCAT-test/autotest/testcase/installation/reg_linux_diskless_installation_hierarchy
@@ -36,7 +36,8 @@ cmd:if cat /etc/*release |grep SUSE >/dev/null;then if [ ! -e /install/custom/ne
 check:rc==0
 cmd:if cat /etc/*release |grep SUSE >/dev/null;then chdef -t osimage -o __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute synclists=/install/custom/netboot/sles/compute.synclist; elif cat /etc/*release |grep "Red Hat" >/dev/null;then chdef -t osimage -o __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute synclists=/install/custom/netboot/rh/compute.synclist;fi
 check:rc==0
-
+cmd:updatenode $$CN -f
+check:rc==0
 cmd:genimage  __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute
 check:rc==0
 cmd:packimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute