diff --git a/libisoburn/trunk/xorriso/xorriso.1 b/libisoburn/trunk/xorriso/xorriso.1
index 85101af2..01862877 100644
--- a/libisoburn/trunk/xorriso/xorriso.1
+++ b/libisoburn/trunk/xorriso/xorriso.1
@@ -2,7 +2,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISO 1 "Aug 14, 2008"
+.TH XORRISO 1 "Aug 15, 2008"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -1667,7 +1667,7 @@ An option consists of a keyword, a "=" character, and a value.
 Default is:
 .br
 use=indev what=tracks min_lba=-1 max_lba=-1 retry=default
-time_limit=-1 item_limit=-1
+time_limit=28800 item_limit=100000
 .br
 abort_file=/var/opt/xorriso/do_abort_check_media
 .br
@@ -1676,7 +1676,7 @@ data_to= sector_map= map_with_volid=off
 Non-default settings:
 .br
 "use=outdev" reads from the output drive instead of the input drive. This
-avoids reading of the ISO image tree from media.
+avoids loading the ISO image tree from media.
 .br
 "what=disc" scans the payload range of a media without respecting track gaps.
 .br
@@ -1698,21 +1698,30 @@ blocks and go on with running xorriso.
 aborted. This is useful for unattended scanning of media which may else
 overwork the drive in its effort to squeeze out some readable blocks.
 Abort may be delayed by the drive gnawing on the last single read operation.
+Value -1 means unlimited time.
 .br
 "item_limit=" gives the number of report list items after which to abort.
+Value -1 means unlimited item number.
 .br
 "data_to=" copies the valid blocks to the file which is given as option value.
 .br
 "sector_map=" tries to read the file given by option value as
-"xorriso sector bitmap" and to store such a map file after the scan run.
+sector bitmap and to store such a map file after the scan run.
 The bitmap tells which blocks have been read successfully in previous runs.
 It allows to do several scans on the same media, eventually with intermediate
 eject, in order to collect readable blocks whenever the drive is lucky enough
-to produce them. The stored file also contains a human readable TOC of tracks
-and their start block addresses.
+to produce them. The stored file contains a human readable TOC of tracks
+and their start block addresses, followed by binary bitmap data.
 .br
 "map_with_volid=on" examines tracks whether they are ISO images and eventually
 prints their volume ids into the human readable TOC of sector_map=.
+.br
+"use=sector_map" does not read any media but loads the file given by option
+sector_map= and processes this virtual outcome.
+.br
+The result list tells intervals of 2 KiB blocks with start address, number
+of blocks and quality. Qualities which begin with "+" are
+supposed to be valid readable data. Qualities with "-" are no valid data.
 .TP
 .B osirrox restore options:
 .PP
diff --git a/libisoburn/trunk/xorriso/xorriso.c b/libisoburn/trunk/xorriso/xorriso.c
index 415f3354..85feb876 100644
--- a/libisoburn/trunk/xorriso/xorriso.c
+++ b/libisoburn/trunk/xorriso/xorriso.c
@@ -2792,23 +2792,23 @@ int Spotlist_get_item(struct SpotlisT *o, int idx,
 char *Spotlist__quality_name(int quality, char name[80], int flag)
 {
  if(quality == Xorriso_read_quality_gooD)
-   strcpy(name, "good");
+   strcpy(name, "+ good");
  else if(quality == Xorriso_read_quality_sloW)
-   strcpy(name, "slow");
+   strcpy(name, "+ slow");
  else if(quality == Xorriso_read_quality_partiaL)
-   strcpy(name, "partial");
+   strcpy(name, "+ partial");
  else if(quality == Xorriso_read_quality_valiD)
-   strcpy(name, "valid");
- else if(quality == Xorriso_read_quality_invaliD)
-   strcpy(name, "invalid");
- else if(quality == Xorriso_read_quality_tao_enD)
-   strcpy(name, "tao end");
- else if(quality == Xorriso_read_quality_off_tracK)
-   strcpy(name, "off track");
+   strcpy(name, "+ valid");
  else if(quality == Xorriso_read_quality_untesteD)
-   strcpy(name, "untested");
+   strcpy(name, "0 untested");
+ else if(quality == Xorriso_read_quality_invaliD)
+   strcpy(name, "- invalid");
+ else if(quality == Xorriso_read_quality_tao_enD)
+   strcpy(name, "- tao end");
+ else if(quality == Xorriso_read_quality_off_tracK)
+   strcpy(name, "- off track");
  else if(quality == Xorriso_read_quality_unreadablE)
-   strcpy(name, "unreadable");
+   strcpy(name, "- unreadable");
  else
    sprintf(name, "0x%8.8X", (unsigned) quality);
  return(name);
@@ -3118,14 +3118,14 @@ int Checkmediajob_new(struct CheckmediajoB **o, int flag)
  if(m==NULL)
    return(-1);
  *o= m;
- m->use_outdev= 0;
+ m->use_dev= 0;
  m->min_lba= -1;
  m->max_lba= -1;
  m->min_block_size= 16;
  m->mode= 0;
  m->start_time= time(NULL);
- m->time_limit= -1;
- m->item_limit= -1;
+ m->time_limit= 28800;
+ m->item_limit= 100000;
  strcpy(m->abort_file_path, "/var/opt/xorriso/do_abort_check_media");
  m->data_to_path[0]= 0;
  m->data_to_fd= -1;
@@ -8818,6 +8818,70 @@ int Xorriso_spotlist_to_sectormap(struct XorrisO *xorriso,
 }
  
 
+int Xorriso_sectormap_to_spotlist(struct XorrisO *xorriso,
+                                  struct CheckmediajoB *job,
+                                  struct SpotlisT **spotlist,
+                                  int flag)
+{
+ struct SectorbitmaP *map;
+ int ret, i, sectors, sector_size, value, old_value= -1, old_start= -1;
+
+ map= job->sector_map;
+ if(map == NULL)
+   return(-1);
+ ret= Spotlist_new(spotlist, 0); 
+ if(ret <= 0)
+   {ret= -1; goto ex;}
+ Sectorbitmap_get_layout(map, &sectors, &sector_size, 0);
+ sector_size/= 2048;
+ if(job->max_lba >= 0)
+   sectors= (job->max_lba + 1) / sector_size;
+ i= 0;
+ if(job->min_lba >= 0)
+   i= job->min_lba / sector_size;
+ for(; i < sectors; i++) {
+   value= Sectorbitmap_is_set(map, i, 0);
+   if(value == old_value)
+ continue;
+   if(old_value >= 0) {
+     ret= Spotlist_add_item(*spotlist, old_start, i * sector_size - old_start,
+                            (old_value ? Xorriso_read_quality_valiD :
+                                         Xorriso_read_quality_invaliD), 0);
+     if(ret <= 0)
+       goto ex;
+     if(job->item_limit > 0 &&
+        Spotlist_count(*spotlist, 0) + 1 >= job->item_limit) {
+       sprintf(xorriso->info_text, "-check_media: Reached item_limit=%d",
+               job->item_limit);
+       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "NOTE", 0);
+       if(sectors - i > 1) {
+         ret= Spotlist_add_item(*spotlist, i * sector_size,
+                                (sectors - i - 1) * sector_size,
+                                Xorriso_read_quality_untesteD, 0);
+         if(ret <= 0)
+           goto ex;
+       }
+       ret= 2; goto ex;
+     }
+   }
+   old_value= value;
+   old_start= i * sector_size;
+ }
+ if(old_value >= 0) {
+   ret= Spotlist_add_item(*spotlist, old_start, i * sector_size - old_start,
+                          (old_value ? Xorriso_read_quality_valiD :
+                                       Xorriso_read_quality_invaliD), 0);
+   if(ret <= 0)
+     goto ex;
+ }
+ ret= 1;
+ex:;
+ if(ret <= 0)
+   Spotlist_destroy(spotlist, 0);
+ return(ret);
+}
+
+
 int Xorriso_afile_fopen(struct XorrisO *xorriso,
                         char *filename, char *mode, FILE **ret_fp, int flag)
 /*
@@ -9402,7 +9466,7 @@ int Xorriso_option_check_media(struct XorrisO *xorriso,
                                int argc, char **argv, int *idx, int flag)
 {
  int ret, i, count, lba, blocks, quality;
- int end_idx,  old_idx;
+ int end_idx, old_idx, os_errno;
  char quality_name[80];
  double num;
  struct SpotlisT *spotlist= NULL;
@@ -9467,9 +9531,11 @@ int Xorriso_option_check_media(struct XorrisO *xorriso,
        job->item_limit= num;
    } else if(strncmp(argv[i], "use=", 4) == 0) {
      if(strcmp(argv[i] + 4, "outdev") == 0)
-       job->use_outdev= 1;
+       job->use_dev= 1;
      else if(strcmp(argv[i] + 4, "indev") == 0)
-       job->use_outdev= 0;
+       job->use_dev= 0;
+     else if(strcmp(argv[i] + 4, "sector_map") == 0)
+       job->use_dev= 2;
      else
        goto unknown_value;
    } else if(strncmp(argv[i], "what=", 5) == 0) {
@@ -9490,9 +9556,30 @@ unknown_value:;
      ret= 0; goto ex;
    }
  }
- ret= Xorriso_check_media(xorriso, &spotlist, job, 0);
- if(ret <= 0)
-   goto ex;
+
+ if(job->use_dev == 2) {
+   if(job->sector_map_path[0] == 0) {
+     sprintf(xorriso->info_text,
+             "-check_media: option use=sector_map but sector_map=''");
+     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
+     ret= 0; goto ex;
+   }
+   ret= Sectorbitmap_from_file(&(job->sector_map), job->sector_map_path,
+                               xorriso->info_text, &os_errno, 0);
+   if(ret <= 0) {
+     if(xorriso->info_text[0])
+       Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, os_errno,
+                           "FAILURE", 0);
+     goto ex;
+   }
+   ret= Xorriso_sectormap_to_spotlist(xorriso, job, &spotlist, 0);
+   if(ret <= 0)
+     goto ex;
+ } else {
+   ret= Xorriso_check_media(xorriso, &spotlist, job, 0);
+   if(ret <= 0)
+     goto ex;
+ }
 
  sprintf(xorriso->result_line,
          "MCL layout   :        lba ,       size , quality\n");
diff --git a/libisoburn/trunk/xorriso/xorriso_timestamp.h b/libisoburn/trunk/xorriso/xorriso_timestamp.h
index 114ae432..c47a2599 100644
--- a/libisoburn/trunk/xorriso/xorriso_timestamp.h
+++ b/libisoburn/trunk/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2008.08.15.102849"
+#define Xorriso_timestamP "2008.08.15.155421"
diff --git a/libisoburn/trunk/xorriso/xorrisoburn.c b/libisoburn/trunk/xorriso/xorrisoburn.c
index 22caef41..f36eaaa1 100644
--- a/libisoburn/trunk/xorriso/xorrisoburn.c
+++ b/libisoburn/trunk/xorriso/xorrisoburn.c
@@ -6578,7 +6578,7 @@ int Xorriso_check_interval(struct XorrisO *xorriso, struct SpotlisT *spotlist,
                            int flag)
 {
  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;
+ int prev_quality= -1, quality= -1, retry= 0, profile_no, is_cd= 0;
  int start_sec, end_sec, first_value, fret;
  char profile_name[80];
  int start_lba= 0;
@@ -6592,7 +6592,7 @@ int Xorriso_check_interval(struct XorrisO *xorriso, struct SpotlisT *spotlist,
 
  ret= Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                                 "on attempt to check media readability",
-                                !!job->use_outdev);
+                                !!job->use_dev);
  if(ret<=0)
    goto ex;
  ret= burn_disc_get_profile(drive, &profile_no, profile_name);
@@ -6812,7 +6812,7 @@ int Xorriso_check_media(struct XorrisO *xorriso, struct SpotlisT **spotlist,
 
  ret= Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
                                 "on attempt to check media readability",
-                                !!job->use_outdev);
+                                !!job->use_dev);
  if(ret<=0)
    goto ex;
 
@@ -6854,10 +6854,15 @@ int Xorriso_check_media(struct XorrisO *xorriso, struct SpotlisT **spotlist,
  Xorriso_pacifier_reset(xorriso, 0);
  job->start_time= time(NULL);
  mode= job->mode;
- if(job->min_lba >= 0)
-     start_lba= job->min_lba;
+ if(job->min_lba >= 0) {
+   start_lba= job->min_lba;
+   ret= Spotlist_add_item(*spotlist, 0, job->min_lba, 
+                          Xorriso_read_quality_untesteD, 0);
+   if(ret <= 0)
+     goto ex;
+ }
  if(job->max_lba >= 0) {
-   blocks= job->max_lba - start_lba;
+   blocks= job->max_lba + 1 - start_lba;
    xorriso->pacifier_total= blocks;
    ret= Xorriso_check_interval(xorriso, *spotlist, job, start_lba, blocks,
                                read_chunk, 0);
@@ -6969,7 +6974,7 @@ ex:;
  }
  if(toc_info != NULL)
     free(toc_info);
- if(ret < 0)
+ if(ret <= 0)
    Spotlist_destroy(spotlist, 0);
  return(ret);
 }
diff --git a/libisoburn/trunk/xorriso/xorrisoburn.h b/libisoburn/trunk/xorriso/xorrisoburn.h
index cafc7200..dc56ea41 100644
--- a/libisoburn/trunk/xorriso/xorrisoburn.h
+++ b/libisoburn/trunk/xorriso/xorrisoburn.h
@@ -279,7 +279,7 @@ int Xorriso_msinfo(struct XorrisO *xorriso, int *msc1, int *msc2, int flag);
 
 
 struct CheckmediajoB {
- int use_outdev;     /* 0= use indev , 1= use outdev */
+ int use_dev;        /* 0= use indev , 1= use outdev , 2= use sector map*/
 
  int min_lba;        /* if >=0 : begin checking at this address */
  int max_lba;        /* if >=0 : read up to this address, else use mode */