diff --git a/libisoburn/trunk/xorriso/xorriso.1 b/libisoburn/trunk/xorriso/xorriso.1
index ac4be302..5f503361 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 "Oct 07, 2009"
+.TH XORRISO 1 "Oct 10, 2009"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -2374,6 +2374,14 @@ path will be used as mount point and must already exist as a directory.
 The command gets printed to the result channel. See option -mount
 for direct execution of this command.
 .TP
+\fB\-mount_opts\fR option[:option...]
+Set options which influence -mount and -mount_cmd. Currently there is only
+option "exclusive" which is default and its counterpart "shared". The latter
+causes xorriso not to give up the affected drive with command -mount. On Linux
+it adds mount option "loop" which may allow to mount several sessions of
+the same block device at the same time. One should not write to a mounted
+optical media, of course. Take care to umount all sessions before ejecting.
+.TP
 \fB\-session_string\fR drive entity id format
 Print to the result channel a text which gets composed according to
 format and the parameters of the addressed session.
diff --git a/libisoburn/trunk/xorriso/xorriso.c b/libisoburn/trunk/xorriso/xorriso.c
index 4ec37c9c..83df5fb2 100644
--- a/libisoburn/trunk/xorriso/xorriso.c
+++ b/libisoburn/trunk/xorriso/xorriso.c
@@ -6832,7 +6832,12 @@ int Xorriso_status(struct XorrisO *xorriso, char *filter, FILE *fp, int flag)
          xorriso->do_restore_sort_lba ? "sort_lba_on" : "sort_lba_off",
          xorriso->drives_exclusive ? "o_excl_on" : "o_excl_off"
         );
- 
+ if(!(is_default && no_defaults))
+   Xorriso_status_result(xorriso,filter,fp,flag&2);
+
+ is_default= (xorriso->mount_opts_flag == 0);
+  sprintf(line,"-mount_opts %s\n",
+          xorriso->mount_opts_flag & 1 ? "shared" : "exclusive");
  if(!(is_default && no_defaults))
    Xorriso_status_result(xorriso,filter,fp,flag&2);
 
@@ -12222,7 +12227,8 @@ too_long:;
  if(sys_code == 1) { /* Linux */
    sprintf(form,
            "%smount -t iso9660 -o %snodev,noexec,nosuid,ro,sbsector=%%sbsector%% %%device%% %s",
-           (flag & 1 ? "/bin/" : ""), (reg_file ? "loop," : ""),
+           (flag & 1 ? "/bin/" : ""),
+           (reg_file || (xorriso->mount_opts_flag & 1) ? "loop," : ""),
            Text_shellsafe(cpt, sfe, 0));
    is_safe= 1;
  } else if(sys_code == 2) { /* FreeBSD */
@@ -15950,6 +15956,8 @@ int Xorriso_option_help(struct XorrisO *xorriso, int flag)
 "  -mount_cmd drive entity id path",
 "                 Print to result channel a command suitable to mount the",
 "                 depicted entity (see -load) at the given directory path.",
+"  -mount_opts \"exclusive\"|\"shared\"",
+"                 Set options for -mount and -mount_cmd.",
 "  -session_string drive entity id \"linux:\"path|\"freebsd:\"path|form",
 "                 Print foreign OS command or custom line.",
 "",
@@ -17098,6 +17106,41 @@ int Xorriso_option_mount(struct XorrisO *xorriso, char *dev, char *adr_mode,
 }
 
 
+/* Option -mount_opts option[:...] */
+int Xorriso_option_mount_opts(struct XorrisO *xorriso, char *mode, int flag)
+{
+ int was, l;
+ char *cpt, *npt;
+
+ was= xorriso->mount_opts_flag;
+ npt= cpt= mode;
+ for(cpt= mode; npt!=NULL; cpt= npt+1) {
+   npt= strchr(cpt,':');
+   if(npt==NULL)
+     l= strlen(cpt);
+   else
+     l= npt-cpt;
+   if(l==0)
+     goto unknown_mode;
+   if(strncmp(cpt, "shared", l)==0) {
+     xorriso->mount_opts_flag|= 1;
+   } else if(strncmp(cpt, "exclusive", l)==0) {
+     xorriso->mount_opts_flag&= ~1;
+   } else {
+unknown_mode:;
+     if(l<SfileadrL)
+       sprintf(xorriso->info_text, "-mount_opts: unknown option '%s'", cpt);
+     else
+       sprintf(xorriso->info_text, "-mount_opts: oversized parameter (%d)",l);
+     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
+     xorriso->mount_opts_flag= was;
+     return(0);
+   }
+ }
+ return(1);
+}
+
+
 /* Option -mv alias -mvi */
 int Xorriso_option_mvi(struct XorrisO *xorriso, int argc, char **argv,
                       int *idx, int flag)
@@ -19209,7 +19252,7 @@ int Xorriso_count_args(struct XorrisO *xorriso, int argc, char **argv,
     "iso_rr_pattern","follow","format","fs","gid","grow_blindly","hardlinks",
     "history","indev","in_charset","joliet",
     "list_delimiter","list_profiles","local_charset",
-    "mark","md5","not_leaf","not_list","not_mgt",
+    "mark","md5","mount_opts","not_leaf","not_list","not_mgt",
     "options_from_file","osirrox","outdev","out_charset","overwrite",
     "pacifier","padding","path_list","pathspecs","pkt_output","print","prompt",
     "prog","prog_help","publisher","quoted_not_list","quoted_path_list",
@@ -19746,6 +19789,10 @@ next_command:;
                                argv[(*idx)-2], argv[(*idx)-1],
                                (strcmp(cmd, "mount_cmd") == 0));
 
+ } else if(strcmp(cmd, "mount_opts")==0) {
+   (*idx)++;
+   ret= Xorriso_option_mount_opts(xorriso, arg1, 0);
+
  } else if(strcmp(cmd,"mv")==0 || strcmp(cmd,"mvi")==0) {
    ret= Xorriso_option_mvi(xorriso, argc, argv, idx, 0);
 
diff --git a/libisoburn/trunk/xorriso/xorriso.h b/libisoburn/trunk/xorriso/xorriso.h
index 60ea6a7d..d939ee42 100644
--- a/libisoburn/trunk/xorriso/xorriso.h
+++ b/libisoburn/trunk/xorriso/xorriso.h
@@ -759,12 +759,16 @@ int Xorriso_option_md5(struct XorrisO *xorriso, char *mode, int flag);
 int Xorriso_option_mkdiri(struct XorrisO *xorriso, int argc, char **argv,
                           int *idx, int flag);
 
-/* Option -mount */
-/* @param bit0= print mount command to result channel rather than performing it
-*/
+/* Options -mount , -mount_cmd , -session_string */
+/* @param bit0= -mount_cmd: print mount command to result channel rather
+                            than performing it
+          bit1= perform -session_string rather than -mount_cmd
+*/ 
 int Xorriso_option_mount(struct XorrisO *xorriso, char *dev, char *adr_mode,
                          char *adr, char *cmd, int flag);
 
+/* Option -mount_opts option[:...] */
+int Xorriso_option_mount_opts(struct XorrisO *xorriso, char *mode, int flag);
 
 /* Option -mv alias -mvi */
 int Xorriso_option_mvi(struct XorrisO *xorriso, int argc, char **argv,
diff --git a/libisoburn/trunk/xorriso/xorriso_eng.html b/libisoburn/trunk/xorriso/xorriso_eng.html
index 7ca61c8a..4d98267b 100644
--- a/libisoburn/trunk/xorriso/xorriso_eng.html
+++ b/libisoburn/trunk/xorriso/xorriso_eng.html
@@ -551,6 +551,7 @@ cdrecord and mkisofs.</DT>
 <LI>New option -pvd_info</LI>
 <LI>Option -toc now reports "Media product:"</LI>
 <LI>New options -system_id , -volset_id</LI>
+<LI>New option -mount_opts</LI>
 <!-- 
 <LI>- none yet -</LI>
  -->
diff --git a/libisoburn/trunk/xorriso/xorriso_private.h b/libisoburn/trunk/xorriso/xorriso_private.h
index 76677e69..240cb6ca 100644
--- a/libisoburn/trunk/xorriso/xorriso_private.h
+++ b/libisoburn/trunk/xorriso/xorriso_private.h
@@ -290,6 +290,14 @@ struct XorrisO { /* the global context of xorriso */
                                 tree traversal. Better read performance,
                                 no directory mtime restore, needs do_auto_chmod
                            */
+ int mount_opts_flag; /* bit0= "shared" = not "exclusive"
+                               Try to emit non-exclusive mount command.
+                               Do not give up drives.
+                               Linux: use loop device even on block devices
+                               in order to circumvent the ban to mount a
+                               device twice (with different sbsector=)
+                               FreeBSD: ?
+                       */
 
  int dialog;  /* 0=off , 1=single-line , 2=multi-line */
 
diff --git a/libisoburn/trunk/xorriso/xorriso_timestamp.h b/libisoburn/trunk/xorriso/xorriso_timestamp.h
index 10bf6644..61538c1b 100644
--- a/libisoburn/trunk/xorriso/xorriso_timestamp.h
+++ b/libisoburn/trunk/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2009.10.08.155749"
+#define Xorriso_timestamP "2009.10.10.142353"
diff --git a/libisoburn/trunk/xorriso/xorrisoburn.c b/libisoburn/trunk/xorriso/xorrisoburn.c
index eddeda26..5947d799 100644
--- a/libisoburn/trunk/xorriso/xorrisoburn.c
+++ b/libisoburn/trunk/xorriso/xorrisoburn.c
@@ -10628,7 +10628,7 @@ int Xorriso_mount(struct XorrisO *xorriso, char *dev, int adr_mode,
    isoburn_drive_release(drive, 0);
    burn_drive_info_free(dinfo);
    drive= NULL;
- } else if(give_up > 0 && !(flag & 1)) {
+ } else if(give_up > 0 && !((flag & 1) || (xorriso->mount_opts_flag & 1))) {
    Xorriso_give_up_drive(xorriso, give_up);
    if(ret <= 0)
      goto ex;