diff --git a/xorriso/drive_mgt.c b/xorriso/drive_mgt.c
index 3d6c25b4..1757cdf6 100644
--- a/xorriso/drive_mgt.c
+++ b/xorriso/drive_mgt.c
@@ -2465,7 +2465,7 @@ int Xorriso_check_interval(struct XorrisO *xorriso, struct SpotlisT *spotlist,
 {
  int i, j, ret, total_count= 0, sectors= -1, sector_size= -1, skip_reading;
  int prev_quality= -1, quality= -1, retry= 0, profile_no, is_cd= 0;
- int start_sec, end_sec, first_value, fret;
+ int start_sec, end_sec, first_value, fret, suspect_tao_end= 0;
  char profile_name[80];
  int start_lba= 0;
  struct burn_drive *drive;
@@ -2616,6 +2616,7 @@ abort_check:;
    }
 
    to_read= read_chunk;
+   suspect_tao_end= 0;
    if(i + to_read > block_count)
      to_read= block_count - i;
    if(is_cd && i + to_read + 2 >= block_count) {
@@ -2624,12 +2625,14 @@ abort_check:;
      */
      if(to_read > 2)
        to_read-= 2;
-     else if(to_read > 1) {
+     else {
        if(flag & 1) {
          quality= Xorriso_read_quality_tao_enD;
          skip_reading= 1;
-       } else
+       } else if(to_read > 1) {
          to_read--;
+       }
+       suspect_tao_end= 1;
      }
    }
 
@@ -2666,7 +2669,8 @@ abort_check:;
      }
 
      ret= burn_read_data(drive, ((off_t) (i + from_lba)) * (off_t) 2048,
-                     data_pt, to_read * (off_t) 2048, &data_count, 4 * !retry);
+                     data_pt, to_read * (off_t) 2048, &data_count,
+                     (4 * !retry) | (16 * !!suspect_tao_end));
      post_read_time= Sfile_microtime(0);
      time_diff= post_read_time - pre_read_time;
      total_time_diff+= time_diff;
@@ -2686,9 +2690,15 @@ abort_check:;
            if(ret <= 0)
              goto ex;
            start_lba= i + from_lba + data_count / 2048;
-           prev_quality= Xorriso_read_quality_unreadablE;
+           if(suspect_tao_end && ret == -3)
+             prev_quality= Xorriso_read_quality_tao_enD;
+           else
+             prev_quality= Xorriso_read_quality_unreadablE;
          }
-         quality= Xorriso_read_quality_unreadablE;
+         if(suspect_tao_end && ret == -3)
+           quality= Xorriso_read_quality_tao_enD;
+         else
+           quality= Xorriso_read_quality_unreadablE;
          if(retry)
            to_read= data_count / 2048 + 1;
        } else
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index fac348a6..51ebc372 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2012.10.24.095235"
+#define Xorriso_timestamP "2012.10.25.125559"