diff --git a/xCAT-test/autotest/testcase/installation/Diskless_installation_flat_p8_le b/xCAT-test/autotest/testcase/installation/Diskless_installation_flat_p8_le
index eb27a5dc2..7e9dda6d1 100644
--- a/xCAT-test/autotest/testcase/installation/Diskless_installation_flat_p8_le
+++ b/xCAT-test/autotest/testcase/installation/Diskless_installation_flat_p8_le
@@ -30,6 +30,7 @@ check:rc==0
 cmd:rpower $$CN boot
 check:rc==0
 cmd:sleep 200 
+cmd:a=0;while ! `lsdef -l $$CN|grep status|grep booted >/dev/null`; do sleep 10;((a++));if [ $a -gt 300 ];then break;fi done
 cmd:lsdef -l $$CN | grep status
 check:output=~booted
 cmd:xdsh $$CN date
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 749938977..dd608e4b2 100644
--- a/xCAT-test/autotest/testcase/installation/Full_installation_flat_p8_le
+++ b/xCAT-test/autotest/testcase/installation/Full_installation_flat_p8_le
@@ -19,7 +19,8 @@ cmd:nodeset $$CN osimage=__GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-ins
 check:rc==0
 cmd:rpower $$CN boot
 check:rc==0
-cmd:sleep 3000
+cmd:sleep 300
+cmd:a=0;while ! `lsdef -l $$CN|grep status|grep booted >/dev/null`; do sleep 10;((a++));if [ $a -gt 300 ];then break;fi done
 cmd:ping $$CN -c 3
 check:output=~64 bytes from $$CN
 cmd:lsdef -l $$CN | grep status
diff --git a/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm b/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm
index f5a5f9136..a3d4d8850 100644
--- a/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm
+++ b/xCAT-test/autotest/testcase/installation/ubuntu_diskless_installation_vm
@@ -23,6 +23,7 @@ check:rc==0
 cmd:rpower $$CN boot
 check:rc==0
 cmd:sleep 200 
+cmd:a=0;while ! `lsdef -l $$CN|grep status|grep booted >/dev/null`; do sleep 10;((a++));if [ $a -gt 300 ];then break;fi done
 cmd:lsdef -l $$CN | grep status
 check:output=~booted
 cmd:xdsh $$CN date
diff --git a/xCAT-test/autotest/testcase/installation/ubuntu_full_installation_vm b/xCAT-test/autotest/testcase/installation/ubuntu_full_installation_vm
index e25d55a4c..fd6f3e176 100644
--- a/xCAT-test/autotest/testcase/installation/ubuntu_full_installation_vm
+++ b/xCAT-test/autotest/testcase/installation/ubuntu_full_installation_vm
@@ -18,7 +18,8 @@ cmd:nodeset $$CN osimage=__GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-ins
 check:rc==0
 cmd:rpower $$CN boot
 check:rc==0
-cmd:sleep 3000
+cmd:sleep 300
+cmd:a=0;while ! `lsdef -l $$CN|grep status|grep booted >/dev/null`; do sleep 10;((a++));if [ $a -gt 300 ];then break;fi done
 cmd:ping $$CN -c 3
 check:output=~64 bytes from $$CN
 cmd:lsdef -l $$CN | grep status