diff --git a/xCAT-server/lib/xcat/plugins/anaconda.pm b/xCAT-server/lib/xcat/plugins/anaconda.pm
index 57199db64..addda2a66 100644
--- a/xCAT-server/lib/xcat/plugins/anaconda.pm
+++ b/xCAT-server/lib/xcat/plugins/anaconda.pm
@@ -899,7 +899,7 @@ sub mkinstall
 		    if (!$linuximagetab) {
 			$linuximagetab=xCAT::Table->new('linuximage', -create=>1);
 		    }
-		    (my $ref1) = $linuximagetab->getAttribs({imagename => $imagename}, 'template', 'pkgdir', 'pkglist', 'partitionfile');
+		    (my $ref1) = $linuximagetab->getAttribs({imagename => $imagename}, 'template', 'pkgdir', 'pkglist', 'partitionfile', 'driverupdatesrc', 'netdrivers');
 		    if ($ref1) {
 			if ($ref1->{'template'}) {
 			    $img_hash{$imagename}->{template}=$ref1->{'template'};
@@ -910,9 +910,9 @@ sub mkinstall
 			if ($ref1->{'pkglist'}) {
 			    $img_hash{$imagename}->{pkglist}=$ref1->{'pkglist'};
 			}
-            if ($ref1->{'partitionfile'}) {
-                $img_hash{$imagename}->{partitionfile} = $ref1->{'partitionfile'};
-            }
+			if ($ref1->{'partitionfile'}) {
+			    $img_hash{$imagename}->{partitionfile} = $ref1->{'partitionfile'};
+			}
 			if ($ref1->{'driverupdatesrc'}) {
 			    $img_hash{$imagename}->{driverupdatesrc}=$ref1->{'driverupdatesrc'};
 			}
@@ -1691,6 +1691,7 @@ sub insert_dd {
     my @dd_list;
     my @rpm_list;
     my @driver_list;
+    my $Injectalldriver;
 
     my @rpm_drivers;
 
@@ -1717,6 +1718,10 @@ sub insert_dd {
     }
 
     foreach (split /,/,$drivers) {
+        if (/^allupdate$/) {
+            $Injectalldriver = 1;
+            next;
+        }
         unless (/\.ko$/) {
             s/$/.ko/;
         }
@@ -1726,8 +1731,8 @@ sub insert_dd {
     chomp(@dd_list);
     chomp(@rpm_list);
     
-    unless (@dd_list || @rpm_list ) {
-        return undef;
+    unless (@dd_list || (@rpm_list && ($Injectalldriver || @driver_list))) {
+        return ();
     }
 
     # Create the tmp dir for dd hack
@@ -1737,7 +1742,7 @@ sub insert_dd {
     # dracut + drvier rpm
     # !dracut + driver rpm
     # !dracut + driver disk
-    if (!<$install_dir/$os/$arch/Packages/dracut*> || @rpm_list) {
+    if (!<$install_dir/$os/$arch/Packages/dracut*> || (@rpm_list && ($Injectalldriver || @driver_list))) {
         mkpath "$dd_dir/initrd_img"; # The dir for the new initrd
 
         # unzip the initrd image
@@ -1747,7 +1752,7 @@ sub insert_dd {
             my $rsp;
             push @{$rsp->{data}}, "Handle the driver update disk failed. Could not gunzip the initial initrd.";
             xCAT::MsgUtils->message("E", $rsp, $callback);
-            return undef;
+            return ();
         }
     
         # Extract the files from original initrd
@@ -1757,10 +1762,10 @@ sub insert_dd {
             my $rsp;
             push @{$rsp->{data}}, "Handle the driver update disk failed. Could not extract files from the initial initrd.";
             xCAT::MsgUtils->message("E", $rsp, $callback);
-            return undef;
+            return ();
         }
 
-        if (@rpm_list) {
+        if (@rpm_list && ($Injectalldriver || @driver_list)) {
             # Extract the files from rpm to the tmp dir
             mkpath "$dd_dir/rpm";
             foreach my $rpm (@rpm_list) {
@@ -1790,7 +1795,7 @@ sub insert_dd {
             # For dracut mode, only copy the drivers from rpm packages to the /lib/modules/<kernel>
             # The driver disk will be handled that append the whole disk to the orignial initrd
 
-            if (@rpm_list) {
+            if (@rpm_list && ($Injectalldriver || @driver_list)) {
                 # Copy the firmware to the rootimage
                 if (-d "$dd_dir/rpm/lib/firmware") {
                     if (! -d "$dd_dir/initrd_img/lib") {
@@ -1878,7 +1883,7 @@ sub insert_dd {
                 my $rsp;
                 push @{$rsp->{data}}, "Handle the driver update disk failed. Could not gunzip modules.cgz from the initial initrd.";
                 xCAT::MsgUtils->message("E", $rsp, $callback);
-                return undef;
+                return ();
             }
         
             my @modinfo = ();
@@ -1892,7 +1897,7 @@ sub insert_dd {
                     my $rsp;
                     push @{$rsp->{data}}, "Handle the driver update disk failed. Could not mount the driver update disk.";
                     xCAT::MsgUtils->message("E", $rsp, $callback);
-                    return undef;
+                    return ();
                 }
     
                 $cmd = "cd $dd_dir/dd_modules; gunzip -c $dd_dir/mnt/modules.cgz | cpio -id";
@@ -1903,7 +1908,7 @@ sub insert_dd {
                     push @{$rsp->{data}}, "Handle the driver update disk failed. Could not gunzip the modules.cgz from the driver update disk.";
                     xCAT::MsgUtils->message("E", $rsp, $callback);
                     system("umount -f $dd_dir/mnt");
-                    return undef;
+                    return ();
                 }
         
                 # Copy all the driver files out
@@ -1967,7 +1972,7 @@ sub insert_dd {
                     push @{$rsp->{data}}, "Handle the driver update disk failed. Could not unmount the driver update disk.";
                     xCAT::MsgUtils->message("E", $rsp, $callback);
                     system("umount -f $dd_dir/mnt");
-                    return undef;
+                    return ();
                 }
     
                 # Clean the env
@@ -1978,7 +1983,7 @@ sub insert_dd {
             }
 
             # Merge the drviers from rpm packages to the initrd
-            if (@rpm_list) {
+            if (@rpm_list && ($Injectalldriver || @driver_list)) {
                 # Copy the firmware to the rootimage
                 if (-d "$dd_dir/rpm/lib/firmware") {
                     if (! -d "$dd_dir/initrd_img/lib") {
@@ -2034,7 +2039,7 @@ sub insert_dd {
                           }
                       }
                     }
-                  } else {
+                  } elsif ($Injectalldriver) {
                     # copy all the drviers to the initrd
                     if (-d "$dd_dir/rpm/lib/modules/$kernelver") {
                         find(\&get_all_path, <$dd_dir/rpm/lib/modules/$kernelver/*>);
@@ -2148,7 +2153,7 @@ sub insert_dd {
                 my $rsp;
                 push @{$rsp->{data}}, "Handle the driver update disk failed. Could not pack the hacked modules.cgz.";
                 xCAT::MsgUtils->message("E", $rsp, $callback);
-                return undef;
+                return ();
             }
         } # End of non dracut
     
@@ -2159,7 +2164,7 @@ sub insert_dd {
             my $rsp;
             push @{$rsp->{data}}, "Handle the driver update disk failed. Could not pack the hacked initrd.";
             xCAT::MsgUtils->message("E", $rsp, $callback);
-            return undef;
+            return ();
         }
     
         copy ("$dd_dir/initrd.img", $img);
@@ -2175,7 +2180,7 @@ sub insert_dd {
         		my $rsp;
 		        push @{$rsp->{data}}, "Merging multiple driver disks requires createrepo and mkisofs utilities";
 		        xCAT::MsgUtils->message("E", $rsp, $callback);
-		        return undef;
+		        return ();
 		}
 		mkpath("$dd_dir/newddimg");
 		mkpath("$dd_dir/tmpddmnt");
@@ -2223,7 +2228,7 @@ sub insert_dd {
     }
     if (@driver_list) {
         push @{$rsp->{data}}, "Inserted the drivers:".join(',', sort(@rpm_drivers))." from driver packages.";
-    } elsif (@rpm_list) {
+    } elsif (@rpm_list && ($Injectalldriver || @driver_list)) {
          push @{$rsp->{data}}, "Inserted the drivers from driver packages:".join(',', sort(@rpm_list)).".";
     }
     xCAT::MsgUtils->message("I", $rsp, $callback);
diff --git a/xCAT-server/lib/xcat/plugins/sles.pm b/xCAT-server/lib/xcat/plugins/sles.pm
index 7e4c16320..e466415cd 100644
--- a/xCAT-server/lib/xcat/plugins/sles.pm
+++ b/xCAT-server/lib/xcat/plugins/sles.pm
@@ -634,8 +634,8 @@ sub mkinstall
 
     my %doneimgs;
     require xCAT::Template; #only used here, load so memory can be COWed
-            # Define a variable for driver update list
-            my @dd_drivers;
+    # Define a variable for driver update list
+    my @dd_drivers;
     foreach $node (@nodes)
     {
         my $os;
@@ -1395,6 +1395,7 @@ sub insert_dd () {
     my @dd_list;
     my @rpm_list;
     my @driver_list;
+    my $Injectalldriver;
 
     my @rpm_drivers;
 
@@ -1421,6 +1422,10 @@ sub insert_dd () {
     }
 
     foreach (split /,/,$drivers) {
+        if (/^allupdate$/) {
+            $Injectalldriver = 1;
+            next;
+        }
         unless (/\.ko$/) {
             s/$/.ko/;
         }
@@ -1430,8 +1435,8 @@ sub insert_dd () {
     chomp(@dd_list);
     chomp(@rpm_list);
     
-    unless (@dd_list || @rpm_list ) {
-        return undef;
+    unless (@dd_list || (@rpm_list && ($Injectalldriver || @driver_list))) {
+        return ();
     }
 
     # Create the tmp dir for dd hack
@@ -1443,7 +1448,7 @@ sub insert_dd () {
     # Unzip the original initrd
     # This only needs to be done for ppc or handling the driver rpm
     # For the driver disk against x86, append the driver disk to initrd directly
-    if ($arch =~/ppc/ || @rpm_list) {
+    if ($arch =~/ppc/ || (@rpm_list && ($Injectalldriver || @driver_list))) {
         if ($arch =~ /ppc/) {
             $cmd = "gunzip --quiet -c $pkgdir/1/suseboot/initrd64 > $dd_dir/initrd";
         } elsif ($arch =~ /x86/) {
@@ -1468,7 +1473,7 @@ sub insert_dd () {
         }
 
         # Start to load the drivers from rpm packages
-        if (@rpm_list) {
+        if (@rpm_list && ($Injectalldriver || @driver_list)) {
             # Extract the files from rpm to the tmp dir
             mkpath "$dd_dir/rpm";
             foreach my $rpm (@rpm_list) {
@@ -1531,7 +1536,7 @@ sub insert_dd () {
                       }
                   }
                 }
-              } else {
+              } elsif ($Injectalldriver) {
                 # copy all the drviers to the initrd
                 if (-d "$dd_dir/rpm/lib/modules/$kernelver") {
                     $cmd = "cp -rf $dd_dir/rpm/lib/modules/$kernelver $dd_dir/initrd_img/lib/modules/";
@@ -1587,7 +1592,7 @@ sub insert_dd () {
     $cmd = "gzip -f $dd_dir/initrd";
     xCAT::Utils->runcmd($cmd, -1);
 
-    if ($arch =~/ppc/ || @rpm_list) {
+    if ($arch =~/ppc/ || (@rpm_list && ($Injectalldriver || @driver_list))) {
         if ($arch =~/ppc/) {
             # make sure the src kernel existed
             $cmd = "gunzip -c $pkgdir/1/suseboot/linux64.gz > $dd_dir/kernel";
@@ -1626,7 +1631,7 @@ sub insert_dd () {
     }
     if (@driver_list) {
         push @{$rsp->{data}}, "Inserted the drivers:".join(',', sort(@rpm_drivers))." from driver packages.";
-    } elsif (@rpm_list) {
+    } elsif (@rpm_list && ($Injectalldriver || @driver_list)) {
          push @{$rsp->{data}}, "Inserted the drivers from driver packages:".join(',', sort(@rpm_list)).".";
     }
     xCAT::MsgUtils->message("I", $rsp, $callback);
diff --git a/xCAT-server/share/xcat/netboot/rh/genimage b/xCAT-server/share/xcat/netboot/rh/genimage
index 272d41f43..0cce03a42 100755
--- a/xCAT-server/share/xcat/netboot/rh/genimage
+++ b/xCAT-server/share/xcat/netboot/rh/genimage
@@ -157,10 +157,24 @@ unless ($osver and $profile) {
 
 my @ndrivers;
 if ($netdriver) {
+    foreach (split /,/,$netdriver) {
+        if (/^allupdate$/) {
+            next;
+        }
+       unless (/\.ko$/) {
+          s/$/.ko/;
+       }
+       next if (/^$/);
+       push @ndrivers, $_;
+    }
+    
     if ( ($updates{'netdrivers'} ne $netdriver) and ($tempfile) ) {
         $updates{'netdrivers'} = $netdriver;
     }
-} else {
+}
+
+# Use the default list if not specified
+unless (@ndrivers) {
     if ($arch eq 'x86' or $arch eq 'x86_64') {
         @ndrivers = qw/tg3 bnx2 bnx2x e1000 e1000e igb mlx_en virtio_net/;
     } elsif ($arch eq 'ppc64') {
@@ -169,13 +183,6 @@ if ($netdriver) {
     	@ndrivers = qw/qdio ccwgroup/;
     }
 }
-foreach (split /,/,$netdriver) {
-   unless (/\.ko$/) {
-      s/$/.ko/;
-   }
-   next if (/^$/);
-   push @ndrivers, $_;
-}
 
 foreach (@ndrivers) {
    unless (/\.ko$/) {
@@ -440,8 +447,13 @@ foreach my $dd (@dd_drivers) {
     unless (grep { $_ eq $dd} @ndrivers) {
         push @new_order, $dd;
     }
-    print "Added driver $dd from driver update disk or driver rpm.\n";
+    print "Added driver $dd from driver update disk or driver rpm\n";
 }
+
+foreach my $driver (@ndrivers) {
+    print "Added driver $driver from root image\n";
+}
+
 if (@new_order) {
     @ndrivers = (@new_order, @ndrivers);
 }
@@ -1561,6 +1573,7 @@ sub load_dd ()
     my @rpm_list;
     my @driver_list;
 
+    my $Injectalldriver;
     my @rpm_drivers;
 
     # Parse the parameters to the the source of Driver update disk and Driver rpm, and driver list as well
@@ -1585,6 +1598,10 @@ sub load_dd ()
     }
 
     foreach (split /,/,$netdriver) {
+        if (/^allupdate$/) {
+            $Injectalldriver = 1;
+            next;
+        }
         unless (/\.ko$/) {
             s/$/.ko/;
         }
@@ -1595,7 +1612,7 @@ sub load_dd ()
     chomp(@dd_list);
     chomp(@rpm_list);
 
-    unless (@dd_list || @rpm_list ) {
+    unless (@dd_list || (@rpm_list && ($Injectalldriver || @driver_list))) {
         return ();
     }
 
@@ -1679,54 +1696,72 @@ sub load_dd ()
     }
 
     # Loading the drivers from rpm packages
-    if (@rpm_list) {
-        if (@rpm_list) {
-            # Extract the files from rpm to the tmp dir
-            mkpath "$dd_dir/rpm";
-            foreach my $rpm (@rpm_list) {
-                if (-r $rpm) {
-                    if (system ("cd $dd_dir/rpm; rpm2cpio $rpm | cpio -idum")) {
-                        print "Error: Cannot extract the files from the rpm $rpm.\n";
-                    }
-                } else {
-                    print "Error: Cannot read the rpm $rpm.\n";
+    if (@rpm_list && ($Injectalldriver || @driver_list)) {
+        # Extract the files from rpm to the tmp dir
+        mkpath "$dd_dir/rpm";
+        foreach my $rpm (@rpm_list) {
+            if (-r $rpm) {
+                if (system ("cd $dd_dir/rpm; rpm2cpio $rpm | cpio -idum")) {
+                    print "Error: Cannot extract the files from the rpm $rpm.\n";
                 }
-            }
-            # Copy the firmware to the rootimage
-            if (-d "$dd_dir/rpm/lib/firmware") {
-                system ("cp -rf $dd_dir/rpm/lib/firmware $rootimg_dir/lib");
-            }
-            # Copy the drivers to the rootimage
-            if (-d "$dd_dir/rpm/lib/modules/$kernelver") {
-              if (@driver_list) {
-                foreach my $driver (@driver_list) {
-                  $driver_name = $driver;
-                  $real_path = "";
-                  find(\&get_path, <$dd_dir/rpm/lib/modules/$kernelver/*>);
-                  if ($real_path && $real_path =~ m!$dd_dir/rpm(/lib/modules/$kernelver/.*?)[^\/]*$!) {
-                      if (! -d "$rootimg_dir$1") {
-                          mkpath "$rootimg_dir$1";
-                      }
-                      system ("cp -rf $real_path $rootimg_dir$1");
-                      push @rpm_drivers, $driver;
-                  } else {
-                      print "Error: cannot find the driver $driver from the driver rpms\n";
-                  }
-                }
-              } else {
-                # copy all the drviers to the rootimage
-                system ("cp -rf $dd_dir/rpm/lib/modules/$kernelver $rootimg_dir/lib/modules/");
-                find(\&get_all_path, <$dd_dir/rpm/lib/modules/$kernelver/*>);
-                foreach (@all_real_path) {
-                  if (basename($_) =~ /\.ko$/) {
-                      push @rpm_drivers, basename($_);
-                  }
-                }
-              }
             } else {
-              print "Warning: cannot find the kernel $kernelver from drvier rpms\n";
+                print "Error: Cannot read the rpm $rpm.\n";
             }
         }
+        # Copy the firmware to the rootimage
+        if (-d "$dd_dir/rpm/lib/firmware") {
+            system ("cp -rf $dd_dir/rpm/lib/firmware $rootimg_dir/lib");
+        }
+        # Copy the drivers to the rootimage
+        if (-d "$dd_dir/rpm/lib/modules/$kernelver") {
+          if (@driver_list) {
+            foreach my $driver (@driver_list) {
+              $driver_name = $driver;
+              $real_path = "";
+              find(\&get_path, <$dd_dir/rpm/lib/modules/$kernelver/*>);
+              if ($real_path && $real_path =~ m!$dd_dir/rpm(/lib/modules/$kernelver/.*?)[^\/]*$!) {
+                  # remove the old one if existing
+                  @all_real_path = ();
+                  find(\&get_all_path, <$rootimg_dir/lib/modules/$kernelver/*>);
+                  foreach (@all_real_path) {
+                      if (-r $_) {
+                          unlink ($_);
+                      }
+                  }
+                  
+                  if (! -d "$rootimg_dir$1") {
+                      mkpath "$rootimg_dir$1";
+                  }
+                  system ("cp -rf $real_path $rootimg_dir$1");
+                  push @rpm_drivers, $driver;
+              } else {
+                  print "Error: cannot find the driver $driver from the driver rpms\n";
+              }
+            }
+          } elsif ($Injectalldriver) {
+            # copy all the drviers to the rootimage
+            find(\&get_all_path, <$dd_dir/rpm/lib/modules/$kernelver/*>);
+            my @all_drivers = @all_real_path;
+            foreach my $new_driver (@all_drivers) {
+              if (basename($new_driver) =~ /\.ko$/) {
+                  # remove the old one if existing
+                  $driver_name = basename($new_driver);
+                  @all_real_path = ();
+                  find(\&get_all_path, <$rootimg_dir/lib/modules/$kernelver/*>);
+                  foreach my $old_driver (@all_real_path) {
+                      if (-r $old_driver) {
+                          unlink ($old_driver);
+                      }
+                  }
+                  push @rpm_drivers, basename($new_driver);
+              }
+            }
+            
+            system ("cp -rf $dd_dir/rpm/lib/modules/$kernelver $rootimg_dir/lib/modules/");
+          }
+        } else {
+          print "Warning: cannot find the kernel $kernelver from drvier rpms\n";
+        }
 
         push @dd_drivers, @rpm_drivers;
     }
diff --git a/xCAT-server/share/xcat/netboot/sles/genimage b/xCAT-server/share/xcat/netboot/sles/genimage
index 7ae458d99..6219cd3b4 100755
--- a/xCAT-server/share/xcat/netboot/sles/genimage
+++ b/xCAT-server/share/xcat/netboot/sles/genimage
@@ -149,10 +149,29 @@ unless ($osver and $profile) {
 my @ndrivers;
 
 if ($netdriver) {
+    foreach (split /,/,$netdriver) { 
+        if (/^allupdate$/) {
+            next;
+        }
+        unless (/\.ko$/) {
+    	      s/$/.ko/;
+        }
+        next if (/^$/);
+        
+        # Do not include qeth module here
+        # This module is included later on
+        unless ( $_ =~ m/qeth/i ) {
+    	      push @ndrivers, $_;
+        }
+    }
+
     if ( ($updates{'netdrivers'} ne $netdriver) and $tempfile ) {
         $updates{'netdrivers'} = $netdriver;
     }
-} else {
+}
+
+# Use the default list if not specified
+unless (@ndrivers) {
     if ($arch eq 'x86' or $arch eq 'x86_64') {
         @ndrivers = qw/tg3 bnx2 bnx2x e1000 e1000e igb mlx_en be2net/;
     } elsif ($arch eq 'ppc64') {
@@ -162,20 +181,6 @@ if ($netdriver) {
     }
 }
 
-
-foreach (split /,/,$netdriver) { 
-    unless (/\.ko$/) {
-	s/$/.ko/;
-    }
-    next if (/^$/);
-    
-# Do not include qeth module here
-# This module is included later on
-unless ( $_ =~ m/qeth/i ) {
-	push @ndrivers, $_;
-    }
-}
-
 foreach (@ndrivers) {
    unless (/\.ko$/) {
       s/$/.ko/;
@@ -712,8 +717,13 @@ foreach my $dd (@dd_drivers) {
     unless (grep { $_ eq $dd} @ndrivers) {
         push @new_order, $dd;
     }
-    print "Added driver $dd from driver update disk or driver rpm.\n";
+    print "Added driver $dd from driver update disk or driver rpm\n";
 }
+
+foreach my $driver (@ndrivers) {
+    print "Added driver $driver from root image\n";
+}
+
 if (@new_order) {
     @ndrivers = (@new_order, @ndrivers);
 }
@@ -1590,7 +1600,8 @@ sub load_dd()
     my @dd_list;
     my @rpm_list;
     my @driver_list;
-    
+
+    my $Injectalldriver;
     my @rpm_drivers;
 
     # Parse the parameters to the the source of Driver update disk and Driver rpm, and driver list as well
@@ -1615,6 +1626,10 @@ sub load_dd()
     }
 
     foreach (split /,/,$netdriver) { 
+        if (/^allupdate$/) {
+            $Injectalldriver = 1;
+            next;
+        }
         unless (/\.ko$/) {
 	    s/$/.ko/;
         }
@@ -1624,7 +1639,7 @@ sub load_dd()
     chomp(@dd_list);
     chomp(@rpm_list);
 
-    unless (@dd_list || @rpm_list ) {
+    unless (@dd_list || (@rpm_list && ($Injectalldriver || @driver_list))) {
         return ();
     }
 
@@ -1757,7 +1772,7 @@ sub load_dd()
     }
 
     # Loading the drivers from rpm packages
-    if (@rpm_list) {
+    if (@rpm_list && ($Injectalldriver || @driver_list)) {
         # Extract the files from rpm to the tmp dir
         mkpath "$dd_dir/rpm";
         foreach my $rpm (@rpm_list) {
@@ -1782,6 +1797,15 @@ sub load_dd()
               $real_path = "";
               find(\&get_path, <$dd_dir/rpm/lib/modules/$kernelver/*>);
               if ($real_path && $real_path =~ m!$dd_dir/rpm(/lib/modules/$kernelver/.*?)[^\/]*$!) {
+                  # remove the old one if existing
+                  @all_real_path = ();
+                  find(\&get_all_path, <$rootimg_dir/lib/modules/$kernelver/*>);
+                  foreach (@all_real_path) {
+                      if (-r $_) {
+                          unlink ($_);
+                      }
+                  }
+                  
                   if (! -d "$rootimg_dir$1") {
                       mkpath "$rootimg_dir$1";
                   }
@@ -1791,15 +1815,26 @@ sub load_dd()
                   print "Error: cannot find the driver $driver from the driver rpms\n";
               }
             }
-          } else {
+          } elsif ($Injectalldriver) {
             # copy all the drviers to the rootimage
-            system ("cp -rf $dd_dir/rpm/lib/modules/$kernelver $rootimg_dir/lib/modules/");
             find(\&get_all_path, <$dd_dir/rpm/lib/modules/$kernelver/*>);
-            foreach (@all_real_path) {
-              if (basename($_) =~ /\.ko$/) {
-                  push @rpm_drivers, basename($_);
+            my @all_drivers = @all_real_path;
+            foreach my $new_driver (@all_drivers) {
+              if (basename($new_driver) =~ /\.ko$/) {
+                  # remove the old one if existing
+                  $driver_name = basename($new_driver);
+                  @all_real_path = ();
+                  find(\&get_all_path, <$rootimg_dir/lib/modules/$kernelver/*>);
+                  foreach my $old_driver (@all_real_path) {
+                      if (-r $old_driver) {
+                          unlink ($old_driver);
+                      }
+                  }
+                  push @rpm_drivers, basename($new_driver);
               }
             }
+            
+            system ("cp -rf $dd_dir/rpm/lib/modules/$kernelver $rootimg_dir/lib/modules/");
           }
         } else {
           print "Warning: cannot find the kernel $kernelver from drvier rpms\n";