diff --git a/libisoburn/trunk/xorriso/xorriso_timestamp.h b/libisoburn/trunk/xorriso/xorriso_timestamp.h
index 93bfea0b..1bfbe53a 100644
--- a/libisoburn/trunk/xorriso/xorriso_timestamp.h
+++ b/libisoburn/trunk/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2010.04.18.100814"
+#define Xorriso_timestamP "2010.04.18.141143"
diff --git a/libisoburn/trunk/xorriso/xorrisoburn.c b/libisoburn/trunk/xorriso/xorrisoburn.c
index 823e5b23..8d675b14 100644
--- a/libisoburn/trunk/xorriso/xorrisoburn.c
+++ b/libisoburn/trunk/xorriso/xorrisoburn.c
@@ -1695,8 +1695,7 @@ int Xorriso_set_system_area(struct XorrisO *xorriso, struct burn_drive *drive,
                             IsoImage *img, struct isoburn_imgen_opts *sopts,
                             int flag)
 {
- int ret, options, system_area_options, iso_lba= 0;
- int num_sessions= 0, num_tracks= 0, start_lba, end_lba, image_blocks;
+ int ret, options, system_area_options, iso_lba= -1, start_lba, image_blocks;
  char volid[33];
  FILE *fp= NULL;
  char buf[32768], *bufpt= NULL;
@@ -1704,10 +1703,6 @@ int Xorriso_set_system_area(struct XorrisO *xorriso, struct burn_drive *drive,
  unsigned char *ub;
  ElToritoBootImage *bootimg;
  IsoFile *bootimg_node;
- struct isoburn_toc_disc *disc= NULL;
- struct isoburn_toc_session **sessions;
- struct isoburn_toc_track **tracks;
- struct burn_toc_entry toc_entry;
 
  system_area_options= xorriso->system_area_options;
  memset(buf, 0, 32768);
@@ -1728,42 +1723,15 @@ int Xorriso_set_system_area(struct XorrisO *xorriso, struct burn_drive *drive,
        ub= (unsigned char *) buf;
        hd_lba= (ub[454] | (ub[455] << 8) | (ub[456] << 16) | (ub[457] << 24)) +
                (ub[458] | (ub[459] << 8) | (ub[460] << 16) | (ub[461] << 24));
-       disc= isoburn_toc_drive_get_disc(drive);
-       if(disc == NULL)
-         iso_lba= -1;
-       else {
-         /* With sequential media this is the track end, not the ISO size */
-         end_lba= isoburn_toc_disc_get_sectors(disc);
 
-         /* So inquire start and ISO size of the last track */
-         iso_lba= -1;
-         sessions= isoburn_toc_disc_get_sessions(disc, &num_sessions);
-         if(num_sessions > 0)
-           tracks= isoburn_toc_session_get_tracks(sessions[num_sessions - 1],
-                                                  &num_tracks);
-         if(tracks != NULL && num_tracks > 0)
-           isoburn_toc_track_get_entry(tracks[num_tracks - 1], &toc_entry);
-         if (toc_entry.extensions_valid & 1) {
-           ret= isoburn_toc_track_get_emul(tracks[num_tracks - 1], &start_lba,
-                                           &image_blocks, volid, 0);
-           if(ret > 0) {
-             iso_lba= start_lba + image_blocks;
-           } else {
-             start_lba= toc_entry.start_lba;
-             ret= isoburn_read_iso_head(drive, start_lba, &image_blocks,
-                                        volid, 1);
-             if(ret > 0)
-               iso_lba= start_lba + image_blocks;
-           }
-         }
-
-/* <<< provisorily revoke the new size */
-iso_lba = end_lba;
-
-         if(iso_lba > end_lba)
-           iso_lba= -1;
+       iso_lba= -1;
+       ret= isoburn_disc_get_msc1(drive, &start_lba);
+       if(ret > 0) {
+          ret= isoburn_read_iso_head(drive, start_lba, &image_blocks,
+                                     volid, 1);
+          if(ret > 0)
+            iso_lba= start_lba + image_blocks;
        }
-
        if(((off_t) iso_lba) * (off_t) 4 > hd_lba) {
           system_area_options= 0;
        } else if((xorriso->patch_system_area & 1) &&
@@ -1834,8 +1802,6 @@ do_set:;
 ex:;
  if(fp != NULL && fp != stdin)
    fclose(fp);
- if(disc != NULL)
-   isoburn_toc_disc_free(disc);
  return(ret);
 }