diff --git a/xCAT-server/lib/xcat/plugins/anaconda.pm b/xCAT-server/lib/xcat/plugins/anaconda.pm
index addda2a66..5e648d6e0 100644
--- a/xCAT-server/lib/xcat/plugins/anaconda.pm
+++ b/xCAT-server/lib/xcat/plugins/anaconda.pm
@@ -1494,9 +1494,9 @@ sub copycd
         foreach(@cpiopid){
             kill 2, $_;
         }
-        if ($::CDMOUNTPATH) {
+        if ($mntpath) {
             chdir("/");
-            system("umount $::CDMOUNTPATH");
+            system("umount $mntpath");
         }
     };
     my $KID;
diff --git a/xCAT-server/lib/xcat/plugins/debian.pm b/xCAT-server/lib/xcat/plugins/debian.pm
index cce340ff1..adbbf6a70 100644
--- a/xCAT-server/lib/xcat/plugins/debian.pm
+++ b/xCAT-server/lib/xcat/plugins/debian.pm
@@ -294,9 +294,9 @@ sub copycd
        foreach(@cpiopid){
           kill 2, $_; 
        }
-       if ($::CDMOUNTPATH) {
+       if ($mntpath) {
             chdir("/");
-            system("umount $::CDMOUNTPATH");
+            system("umount $mntpath");
        }
     };
     my $kid;
diff --git a/xCAT-server/lib/xcat/plugins/esx.pm b/xCAT-server/lib/xcat/plugins/esx.pm
index 0dcdb67d8..5351d6a1d 100644
--- a/xCAT-server/lib/xcat/plugins/esx.pm
+++ b/xCAT-server/lib/xcat/plugins/esx.pm
@@ -4210,9 +4210,9 @@ sub copycd {
         foreach(@cpiopid){
             kill 2, $_;
         }
-        if ($::CDMOUNTPATH) {
+        if ($mntpath) {
             chdir("/");
-            system("umount $::CDMOUNTPATH");
+            system("umount $mntpath");
         }
     };
     my $KID;
diff --git a/xCAT-server/lib/xcat/plugins/rhevm.pm b/xCAT-server/lib/xcat/plugins/rhevm.pm
index 1d3ed3085..3715dfdcf 100644
--- a/xCAT-server/lib/xcat/plugins/rhevm.pm
+++ b/xCAT-server/lib/xcat/plugins/rhevm.pm
@@ -453,9 +453,9 @@ sub copycd {
         foreach(@cpiopid){
             kill 2, $_;
         }
-        if ($::CDMOUNTPATH) {
+        if ($mntpath) {
             chdir("/");
-            system("umount $::CDMOUNTPATH");
+            system("umount $mntpath");
         }
     };
     my $KID;
diff --git a/xCAT-server/lib/xcat/plugins/sles.pm b/xCAT-server/lib/xcat/plugins/sles.pm
index e466415cd..dcb2af0e0 100644
--- a/xCAT-server/lib/xcat/plugins/sles.pm
+++ b/xCAT-server/lib/xcat/plugins/sles.pm
@@ -1229,9 +1229,9 @@ sub copycd
        foreach(@cpiopid){
           kill 2, $_; 
        }
-       if ($::CDMOUNTPATH) {
+       if ($mntpath) {
             chdir("/");
-            system("umount $::CDMOUNTPATH");
+            system("umount $mntpath");
        }
     };
     my $kid;
diff --git a/xCAT-server/lib/xcat/plugins/windows.pm b/xCAT-server/lib/xcat/plugins/windows.pm
index 1492df4b9..30590d879 100644
--- a/xCAT-server/lib/xcat/plugins/windows.pm
+++ b/xCAT-server/lib/xcat/plugins/windows.pm
@@ -560,9 +560,9 @@ sub copycd
        foreach(@cpiopid){
           kill 2, $_; 
        }
-       if ($::CDMOUNTPATH) {
+       if ($mntpath) {
             chdir("/");
-            system("umount $::CDMOUNTPATH");
+            system("umount $mntpath");
        }
     };
     my $kid;