diff --git a/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm b/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm
index 7b8425799..2b8a4997e 100644
--- a/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm
+++ b/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm
@@ -2,17 +2,12 @@ start:Ubuntu_diskless_installation_flat_x86_vm
 os:Linux
 cmd:makedns -n
 check:rc==0
-cmd:makeconservercf $$CN
-check:rc==0
 cmd:makedhcp -n
 check:rc==0
 cmd:makedhcp -a
 check:rc==0
-cmd:if [ ! -d /install/custom/netboot/ubuntu ]; then mkdir -p /install/custom/netboot/ubuntu; fi
+cmd:makeconservercf $$CN
 check:rc==0
-cmd:if [ ! -e /install/custom/netboot/ubuntu/compute.synclist ]; then echo "/etc/resolv.conf -> /etc/resolv.conf" > /install/custom/netboot/ubuntu/compute.synclist; fi
-check:rc==0
-cmd:chdef -t osimage -o __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute synclists=/install/custom/netboot/ubuntu/compute.synclist
 cmd:rm -rf /install/netboot/__GETNODEATTR($$CN,os)__/x86_64/compute
 check:rc==0
 cmd:genimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute
@@ -21,7 +16,7 @@ cmd:packimage __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-comput
 check:rc==0
 cmd:nodeset $$CN osimage=__GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-netboot-compute
 check:rc==0
-cmd:rpower $$CN reset
+cmd:rpower $$CN boot
 check:rc==0
 cmd:sleep 200 
 cmd:lsdef -l $$CN | grep status
@@ -39,14 +34,4 @@ check:output=~booted
 cmd:xdsh $$CN date
 check:rc==0
 check:output=~\d\d:\d\d:\d\d
-cmd:nodeset $$CN netboot
-check:rc==0
-cmd:rpower $$CN reset
-check:rc==0
-cmd:sleep 200
-cmd:lsdef -l $$CN | grep status
-check:output=~booted
-cmd:xdsh $$CN date
-check:rc==0
-check:output=~\d\d:\d\d:\d\d
 end