diff --git a/xCAT-server/share/xcat/install/rh/compute.rhels6.ppc64.tmpl b/xCAT-server/share/xcat/install/rh/compute.rhels6.ppc64.tmpl
index 408597829..50dc384f1 100644
--- a/xCAT-server/share/xcat/install/rh/compute.rhels6.ppc64.tmpl
+++ b/xCAT-server/share/xcat/install/rh/compute.rhels6.ppc64.tmpl
@@ -18,7 +18,7 @@ keyboard "us"
 #
 # Clear the MBR
 #
-zerombr
+zerombr yes
 
 #
 # Wipe out the disk
diff --git a/xCAT-server/share/xcat/install/rh/compute.rhels6.s390x.tmpl b/xCAT-server/share/xcat/install/rh/compute.rhels6.s390x.tmpl
index 07b63212f..63ea029a6 100644
--- a/xCAT-server/share/xcat/install/rh/compute.rhels6.s390x.tmpl
+++ b/xCAT-server/share/xcat/install/rh/compute.rhels6.s390x.tmpl
@@ -17,7 +17,7 @@ key --skip
 # Note that any partitions you deleted are not expressed
 # here so unless you clear all partitions first, this is
 # not guaranteed to work
-zerombr
+zerombr yes
 clearpart --initlabel --drives=dasda
 part / --fstype ext3 --size=100 --grow --ondisk=dasda
 part swap --size=512 --ondisk=dasda
diff --git a/xCAT-server/share/xcat/install/rh/compute.rhels6.tmpl b/xCAT-server/share/xcat/install/rh/compute.rhels6.tmpl
index 047dc238c..e1d433b08 100644
--- a/xCAT-server/share/xcat/install/rh/compute.rhels6.tmpl
+++ b/xCAT-server/share/xcat/install/rh/compute.rhels6.tmpl
@@ -17,7 +17,7 @@ keyboard "us"
 #
 # Clear the MBR
 #
-zerombr
+zerombr yes
 
 #
 # Wipe out the disk
diff --git a/xCAT-server/share/xcat/install/rh/compute_ad.rhels6.tmpl b/xCAT-server/share/xcat/install/rh/compute_ad.rhels6.tmpl
index 3eb2bef53..2a37d3eb4 100644
--- a/xCAT-server/share/xcat/install/rh/compute_ad.rhels6.tmpl
+++ b/xCAT-server/share/xcat/install/rh/compute_ad.rhels6.tmpl
@@ -17,7 +17,7 @@ keyboard "us"
 #
 # Clear the MBR
 #
-zerombr
+zerombr yes
 
 #
 # Wipe out the disk
diff --git a/xCAT-server/share/xcat/install/rh/hpc.rhels6.tmpl b/xCAT-server/share/xcat/install/rh/hpc.rhels6.tmpl
index 047dc238c..e1d433b08 100644
--- a/xCAT-server/share/xcat/install/rh/hpc.rhels6.tmpl
+++ b/xCAT-server/share/xcat/install/rh/hpc.rhels6.tmpl
@@ -17,7 +17,7 @@ keyboard "us"
 #
 # Clear the MBR
 #
-zerombr
+zerombr yes
 
 #
 # Wipe out the disk
diff --git a/xCAT-server/share/xcat/install/rh/kvm.rhel6.tmpl b/xCAT-server/share/xcat/install/rh/kvm.rhel6.tmpl
index 047dc238c..e1d433b08 100644
--- a/xCAT-server/share/xcat/install/rh/kvm.rhel6.tmpl
+++ b/xCAT-server/share/xcat/install/rh/kvm.rhel6.tmpl
@@ -17,7 +17,7 @@ keyboard "us"
 #
 # Clear the MBR
 #
-zerombr
+zerombr yes
 
 #
 # Wipe out the disk
diff --git a/xCAT-server/share/xcat/install/rh/kvm.rhels6.tmpl b/xCAT-server/share/xcat/install/rh/kvm.rhels6.tmpl
index 047dc238c..e1d433b08 100644
--- a/xCAT-server/share/xcat/install/rh/kvm.rhels6.tmpl
+++ b/xCAT-server/share/xcat/install/rh/kvm.rhels6.tmpl
@@ -17,7 +17,7 @@ keyboard "us"
 #
 # Clear the MBR
 #
-zerombr
+zerombr yes
 
 #
 # Wipe out the disk
diff --git a/xCAT-server/share/xcat/install/rh/service.raid1.multipath.rhel6.ppc64.tmpl b/xCAT-server/share/xcat/install/rh/service.raid1.multipath.rhel6.ppc64.tmpl
index a7e674f6e..57adf0afc 100644
--- a/xCAT-server/share/xcat/install/rh/service.raid1.multipath.rhel6.ppc64.tmpl
+++ b/xCAT-server/share/xcat/install/rh/service.raid1.multipath.rhel6.ppc64.tmpl
@@ -18,7 +18,7 @@ keyboard "us"
 #
 # Clear the MBR
 #
-zerombr
+zerombr yes
 
 #
 # Wipe out the disk
diff --git a/xCAT-server/share/xcat/install/rh/service.raid1.rhel6.ppc64.tmpl b/xCAT-server/share/xcat/install/rh/service.raid1.rhel6.ppc64.tmpl
index b58225254..8cf0428e3 100644
--- a/xCAT-server/share/xcat/install/rh/service.raid1.rhel6.ppc64.tmpl
+++ b/xCAT-server/share/xcat/install/rh/service.raid1.rhel6.ppc64.tmpl
@@ -18,7 +18,7 @@ keyboard "us"
 #
 # Clear the MBR
 #
-zerombr
+zerombr yes
 
 #
 # Wipe out the disk
diff --git a/xCAT-server/share/xcat/install/rh/service.rhels6.ppc64.tmpl b/xCAT-server/share/xcat/install/rh/service.rhels6.ppc64.tmpl
index 509483367..149255612 100644
--- a/xCAT-server/share/xcat/install/rh/service.rhels6.ppc64.tmpl
+++ b/xCAT-server/share/xcat/install/rh/service.rhels6.ppc64.tmpl
@@ -18,7 +18,7 @@ keyboard "us"
 #
 # Clear the MBR
 #
-zerombr
+zerombr yes
 
 #
 # Wipe out the disk