diff --git a/perl-xCAT/xCAT/data/discinfo.pm b/perl-xCAT/xCAT/data/discinfo.pm
index 93173fd77..e97c835d0 100755
--- a/perl-xCAT/xCAT/data/discinfo.pm
+++ b/perl-xCAT/xCAT/data/discinfo.pm
@@ -35,6 +35,7 @@ require Exporter;
                  "1195488871.805863" => "centos4.6",
                  "1195487524.127458" => "centos4.6",
                  "1301444731.448392" => "centos5.6",
+                 "1414159991.958686" => "centos6.6",
                  "1170973598.629055" => "rhelc5",
                  "1170978545.752040" => "rhels5",
                  "1192660014.052098" => "rhels5.1",
@@ -55,6 +56,7 @@ require Exporter;
                  "1354214009.518521" => "rhels5.9", #ppc64
                  "1378846702.129847" => "rhels5.10", #x86_64
                  "1378845049.643372" => "rhels5.10", #ppc64
+                 "1409145026.642170" => "rhels5.11",
                  "1285193176.460470" => "rhels6", #x86_64
                  "1285192093.430930" => "rhels6", #ppc64
                  "1305068199.328169" => "rhels6.1", #x86_64
diff --git a/xCAT-server/share/xcat/netboot/rh/genimage b/xCAT-server/share/xcat/netboot/rh/genimage
index 6cea41848..76b49dcb3 100755
--- a/xCAT-server/share/xcat/netboot/rh/genimage
+++ b/xCAT-server/share/xcat/netboot/rh/genimage
@@ -1704,6 +1704,14 @@ sub using_systemd {
         if ($1 >= 7) {
             return 1;
         }
+    }elsif ($os =~/centos(\d+)/){
+        if($1 >= 7){
+            return 1;
+        }
+    }elsif ($os =~/rhelhpc(\d+)/){
+        if($1 >= 7){
+            return 1;
+        }
     }
 
     return 0;