diff --git a/xCAT-nbroot/xcat-core-nbroot.spec b/xCAT-nbroot/xcat-core-nbroot.spec
index 2d3cb92f3..871254564 100644
--- a/xCAT-nbroot/xcat-core-nbroot.spec
+++ b/xCAT-nbroot/xcat-core-nbroot.spec
@@ -46,7 +46,7 @@ rm -rf $RPM_BUILD_ROOT
 mkdir -p $RPM_BUILD_ROOT/usr/share/xcat/netboot/%{tarch}/nbroot
 cd $RPM_BUILD_ROOT/usr/share/xcat/netboot/%{tarch}/nbroot
 tar zxvf %{SOURCE1}
-chmod 755 etc/S40network bin/getdestiny bin/getdestiny.awk bin/getipmi bin/getipmi.awk
+chmod 755 etc/init.d/S40network bin/getdestiny bin/getdestiny.awk bin/getipmi bin/getipmi.awk
 cd -
 
 
diff --git a/xCAT-server-2.0/lib/xcat/plugins/copycds.pm b/xCAT-server-2.0/lib/xcat/plugins/copycds.pm
index c7bd0f0b6..9a7f74583 100644
--- a/xCAT-server-2.0/lib/xcat/plugins/copycds.pm
+++ b/xCAT-server-2.0/lib/xcat/plugins/copycds.pm
@@ -51,7 +51,7 @@ sub process_request {
       return;
     }
     mkdir "/mnt/xcat";
-    if (system("mount -o loop $_ /mnt/xcat")) {
+    if (system("mount -o loop,ro $_ /mnt/xcat")) {
       $callback->({error=>"copycds was unable to examine $_ as an install image"});
       return;
     }