This goes a step farther an allows ubd to be ubd\d{1] rather then confined to

1, however, mtd and mtdblock will be 0 for the first module invocation.

BootRoot/BootRoot.pm

@@ -1691,7 +1691,7 @@ sub uml_box {
 	       $mtd_total_size = $blocks * 1024;
 	}
         $eab3->signal_connect( "changed", sub {
-	   my $root_fs = (split(/ubd0\w?=/,$entry_advanced[10]))[1];
+	   my $root_fs = (split(/ubd\d{1}\w?=/,$entry_advanced[10]))[1];
 	   if ( -f  $root_fs ) {
 	       my $stat_size =  (stat("$root_fs"))[12]/2; 
 	       my $blocks  = ($stat_size + ( $stat_size * 0.30 ))/1024;
@@ -1822,7 +1822,7 @@ sub uml_box {
 						  }
 
 						  # Grab the file being used
-						  if ( m,(ubd0\w?=[/\d\w-]+), ) {
+						  if ( m,(ubd\d{1}\w?=[/\d\w-]+), ) {
 						      if (  $1 !~ /_dd/ ) {
 							  my $ubd0_replacement = $1;
 							  $ubd0  = (split(/=/,$1))[1];
@@ -1833,7 +1833,7 @@ sub uml_box {
 							  s/$ubd0_replacement/$ubd0_replacement_dd/;
 						      }
 						      else {
-							  m,(ubd0\w?=[/\d\w-]+),;
+							  m,(ubd\d{1}\w?=[/\d\w-]+),;
 							  $ubd0  = (split(/=/,$1))[1];
 							  chomp $ubd0;
 						      }
@@ -1919,7 +1919,7 @@ sub uml_box {
 
 						  # blkmtd uses the _dd images, mtdram uses the real image
 						  for ( $entry_advanced[10],$entry_advanced[9] ) {
-						      if ( m,(ubd0\w?=[/\d\w-]+), ) {
+						      if ( m,(ubd\d{1}\w?=[/\d\w-]+), ) {
 							  if (  $1 =~ /_dd/ ) {
 							      s/_dd//g;
 							  }