diff --git a/xCAT-server/lib/xcat/plugins/debian.pm b/xCAT-server/lib/xcat/plugins/debian.pm
index adbbf6a70..0aff7d759 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, $_; 
        }
-       if ($mntpath) {
+       if ($path) {
             chdir("/");
-            system("umount $mntpath");
+            system("umount $path");
        }
     };
     my $kid;
diff --git a/xCAT-server/lib/xcat/plugins/esx.pm b/xCAT-server/lib/xcat/plugins/esx.pm
index 5351d6a1d..d771046f3 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, $_;
         }
-        if ($mntpath) {
+        if ($path) {
             chdir("/");
-            system("umount $mntpath");
+            system("umount $path");
         }
     };
     my $KID;
diff --git a/xCAT-server/lib/xcat/plugins/windows.pm b/xCAT-server/lib/xcat/plugins/windows.pm
index 30590d879..e5fafc128 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, $_; 
        }
-       if ($mntpath) {
+       if ($path) {
             chdir("/");
-            system("umount $mntpath");
+            system("umount $path");
        }
     };
     my $kid;