diff --git a/xorriso/xorriso.1 b/xorriso/xorriso.1
index 9b44b0fc..ab53f4f1 100644
--- a/xorriso/xorriso.1
+++ b/xorriso/xorriso.1
@@ -1374,6 +1374,26 @@ Show text at beginning of output line and
 wait for the user to hit the Enter key
 resp. to send a line via stdin.
 .TP
+\fB\-errfile_log\fR mode path|channel
+.br
+If problem events are related to input files from the filesystem, then their
+disk_paths can be logged to a file or to output channels R or I.
+.br
+Mode can either be "plain" or "marked". The latter causes marker lines which
+give the time of log start, burn session start, burn session end, log end
+or program end. In mode "plain", only the file paths are logged.
+.br
+If path is "-" or "-R" then the log is directed to the result channel.
+Path "-I" directs it to the info message channel. Any text that does not
+begin with "-" is used as path for a file to append the log lines.
+.br
+Problematic files can be recorded multiple times during one program run.
+If the program run aborts then the list might not be complete because
+some input file arguments might not have been processed at all.
+.br
+The errfile paths are transported as messages of very low priority "ERRFILE".
+This transport becomes visible with -report_about "ALL".
+.TP
 \fB\-end\fR
 .br
 End program immediately
diff --git a/xorriso/xorriso.c b/xorriso/xorriso.c
index 08b24b4b..323b7d68 100644
--- a/xorriso/xorriso.c
+++ b/xorriso/xorriso.c
@@ -1446,6 +1446,34 @@ completed:;
 }
 
 
+/* @param flag bit0=with year and seconds
+*/
+char *Ftimetxt(time_t t, char timetext[40], int flag)
+{
+ char *rpt;
+ struct tm tms, *tmpt;
+ static char months[12][4]= { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+                              "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+
+ tmpt= localtime_r(&t, &tms);
+ rpt= timetext;
+ rpt[0]= 0;
+ if(tmpt==0)
+   sprintf(rpt+strlen(rpt), "%12.f", (double) t);
+ else if (flag&1)
+   sprintf(rpt+strlen(rpt), "%2d %3s %4.4d %2.2d:%2.2d:%2.2d",
+           tms.tm_mday, months[tms.tm_mon], 1900+tms.tm_year,
+           tms.tm_hour, tms.tm_min, tms.tm_sec);
+ else if(time(NULL)-t < 180*86400 && time(NULL)-t >= 0)
+   sprintf(rpt+strlen(rpt), "%3s %2d %2.2d:%2.2d",
+           months[tms.tm_mon], tms.tm_mday, tms.tm_hour, tms.tm_min);
+ else
+   sprintf(rpt+strlen(rpt), "%3s %2d  %4.4d",
+           months[tms.tm_mon], tms.tm_mday, 1900+tms.tm_year);
+ return(timetext);
+}
+
+
 /* ------------------------------------------------------------------------ */
 
 
@@ -2719,6 +2747,8 @@ int Xorriso_new(struct XorrisO ** xorriso,char *progname, int flag)
  Xorriso__text_to_sev(m->abort_on_text, &m->abort_on_severity, 0);
  m->problem_status= 0;
  m->problem_status_text[0]= 0;
+ m->errfile_log[0]= 0;
+ m->errfile_fp= NULL;
  strcpy(m->return_with_text, "SORRY");
  Xorriso__text_to_sev(m->return_with_text, &m->return_with_severity, 0);
  m->return_with_value= 32;
@@ -3798,6 +3828,11 @@ int Xorriso_status(struct XorrisO *xorriso, char *filter, FILE *fp, int flag)
      Xorriso_status_result(xorriso,filter,fp,flag&2);
  }
 
+ is_default= (xorriso->errfile_log[0]==0);
+ sprintf(line,"-errfile_log %s\n",Text_shellsafe(xorriso->errfile_log,sfe,0));
+ if(!(is_default && no_defaults))
+   Xorriso_status_result(xorriso,filter,fp,flag&2);
+
  is_default= (xorriso->mark_text[0]==0);
  sprintf(line,"-mark %s\n",Text_shellsafe(xorriso->mark_text,sfe,0));
  if(!(is_default && no_defaults))
@@ -4889,10 +4924,12 @@ int Xorriso_get_problem_status(struct XorrisO *xorriso, char severity[80],
 int Xorriso_set_problem_status(struct XorrisO *xorriso, char *severity, 
                                int flag)
 {
- char *sev_text= "FATAL";
+ char *sev_text= "ALL";
  int sev, ret;
 
- ret= Xorriso__text_to_sev(severity, &sev, 0);
+ if(severity[0])
+   sev_text= severity;
+ ret= Xorriso__text_to_sev(sev_text, &sev, 0);
  if(ret<=0)
    return(0);
  xorriso->problem_status= sev;
@@ -4905,6 +4942,57 @@ int Xorriso_set_problem_status(struct XorrisO *xorriso, char *severity,
 }
 
 
+/* @param flag bit0-7= purpose
+                       0= ERRFILE
+                       1= mark line (only to be put out if enabled)
+*/
+int Xorriso_process_errfile(struct XorrisO *xorriso,
+                            int error_code, char msg_text[], int os_errno,
+                            int flag)
+{
+ char ttx[41];
+ int purpose;
+
+ if(strlen(msg_text)>SfileadrL)
+   return(-1);
+
+ purpose= flag&255;
+ if(purpose==1 && !(xorriso->errfile_mode&1))
+   return(2);
+ if(xorriso->errfile_fp!=NULL) {
+   if(purpose==1)
+     fprintf(xorriso->errfile_fp, "----------------- %s  %s\n",
+             msg_text, Ftimetxt(time(0), ttx, 1));
+   else
+     fprintf(xorriso->errfile_fp, "%s\n", msg_text);
+   fflush(xorriso->errfile_fp);
+   return(1);
+ }
+ if(xorriso->errfile_log[0]==0)
+   return(1);
+ if(strcmp(xorriso->errfile_log, "-")==0 ||
+    strcmp(xorriso->errfile_log, "-R")==0) {
+   if(purpose==1)
+     sprintf(xorriso->result_line, "----------------- %s  %s\n",
+             msg_text, Ftimetxt(time(0), ttx, 1));
+   else
+     sprintf(xorriso->result_line, "%s\n", msg_text);
+   Xorriso_result(xorriso, 1);
+   return(1);
+ }
+ if(strcmp(xorriso->errfile_log, "-I")==0) {
+   if(purpose==1)
+     sprintf(xorriso->info_text, "ERRFILE_MARK=%s  %s\n",
+             msg_text, Ftimetxt(time(0), ttx, 1));
+   else
+     sprintf(xorriso->info_text, "ERRFILE=%s", msg_text);
+   Xorriso_info(xorriso, 0);
+   return(1);
+ }
+ return(2);
+}
+
+
 /* Note: It is ok to submit xorriso->info_text as msg_text here. */
 /* flag: 
      bit0= for Xorriso_info() : use pager (as with result)
@@ -4926,6 +5014,9 @@ int Xorriso_msgs_submit(struct XorrisO *xorriso,
                    "xorriso : ", "libisofs: ", "libburn : ", "libisoburn: ",
                     "", "", "", "", "", "", "", "", "", "", "", "" };
 
+ if(strcmp(severity, "ERRFILE")==0)
+   Xorriso_process_errfile(xorriso, error_code, msg_text, os_errno, 0);
+
  /* Set problem status */
  ret= Xorriso__text_to_sev(severity, &sev, 0);
  if(ret<=0)
@@ -5589,10 +5680,13 @@ int Xorriso_format_ls_l(struct XorrisO *xorriso, struct stat *stbuf, int flag)
 {
  char *rpt, perms[10];
  mode_t st_mode;
+
+#ifdef NIX
  time_t mtime;
  struct tm tms, *tmpt;
  static char months[12][4]= { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
                               "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
+#endif
 
  rpt= xorriso->result_line;
  rpt[0]= 0;
@@ -5623,6 +5717,10 @@ int Xorriso_format_ls_l(struct XorrisO *xorriso, struct stat *stbuf, int flag)
  sprintf(rpt+strlen(rpt), "%-8lu ", (unsigned long) stbuf->st_uid);
  sprintf(rpt+strlen(rpt), "%-8lu ", (unsigned long) stbuf->st_gid);
  sprintf(rpt+strlen(rpt), "%8.f ", (double) stbuf->st_size);
+
+#ifndef NIX
+ Ftimetxt(stbuf->st_mtime, rpt+strlen(rpt), 0);
+#else
  mtime= stbuf->st_mtime;
  tmpt= localtime_r(&mtime, &tms);
  if(tmpt==0)
@@ -5633,6 +5731,8 @@ int Xorriso_format_ls_l(struct XorrisO *xorriso, struct stat *stbuf, int flag)
  else
    sprintf(rpt+strlen(rpt), "%3s %2d  %4.4d ",
            months[tms.tm_mon], tms.tm_mday, 1900+tms.tm_year);
+#endif
+
  return(1);
 }
 
@@ -7402,7 +7502,9 @@ int Xorriso_option_commit(struct XorrisO *xorriso, int flag)
    if(ret<=0)
      return(2);
  }
+ Xorriso_process_errfile(xorriso, 0, "burn session start", 0, 1);
  ret= Xorriso_write_session(xorriso, 0);
+ Xorriso_process_errfile(xorriso, 0, "burn session end", 0, 1);
  if(ret<=0)
    return(ret);
  xorriso->volset_change_pending= 0;
@@ -7734,20 +7836,47 @@ int Xorriso_option_end(struct XorrisO *xorriso, int flag)
 }
 
 
-/* Option -iso_rr_pattern "on"|"ls"|"off" */
-int Xorriso_option_iso_rr_pattern(struct XorrisO *xorriso, char *mode,int flag)
+/* Option -errfile_log marked|plain  path|-|"" */
+int Xorriso_option_errfile_log(struct XorrisO *xorriso,
+                               char *mode, char *path, int flag)
 {
- if(strcmp(mode, "off")==0)
-   xorriso->do_iso_rr_pattern= 0;
- else if(strcmp(mode, "on")==0)
-   xorriso->do_iso_rr_pattern= 1;
- else if(strcmp(mode, "ls")==0)
-   xorriso->do_iso_rr_pattern= 2;
+ int ret, mode_word;
+ FILE *fp= NULL;
+ char sfe[5*SfileadrL];
+
+ if(path[0]==0 || path[0]=='-') {
+   /* ok */;
+ } else {
+   fp= fopen(path, "a");
+   if(fp==0) {
+     sprintf(xorriso->info_text, "-errfile_log: Cannot open file %s",
+             Text_shellsafe(path, sfe, 0));
+     Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
+     return(0);
+   }
+ }
+ mode_word= xorriso->errfile_mode;
+ if(strcmp(mode, "marked")==0)
+   mode_word|= 1;
+ else if(strcmp(mode, "plain")==0)
+   mode_word&= ~1;
  else {
-   sprintf(xorriso->info_text, "-iso_rr_pattern: unknown mode '%s'", mode);
+   sprintf(xorriso->info_text, "-errfile_log: Unknown mode %s",
+           Text_shellsafe(mode, sfe, 0));
    Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
    return(0);
  }
+ 
+ Xorriso_process_errfile(xorriso, 0, "log end", 0, 1);
+ if(xorriso->errfile_fp!=NULL)
+   fclose(xorriso->errfile_fp);
+ xorriso->errfile_fp= fp;
+ xorriso->errfile_mode= mode_word;
+ ret= Sfile_str(xorriso->errfile_log, path, 0);
+ if(ret>0)
+   ret= Xorriso_process_errfile(xorriso, 0, "log start", 0, 1);
+ if(ret<=0)
+   return(ret);
  return(1);
 }
 
@@ -8343,6 +8472,24 @@ int Xorriso_option_history(struct XorrisO *xorriso, char *line, int flag)
 }
 
 
+/* Option -iso_rr_pattern "on"|"ls"|"off" */
+int Xorriso_option_iso_rr_pattern(struct XorrisO *xorriso, char *mode,int flag)
+{
+ if(strcmp(mode, "off")==0)
+   xorriso->do_iso_rr_pattern= 0;
+ else if(strcmp(mode, "on")==0)
+   xorriso->do_iso_rr_pattern= 1;
+ else if(strcmp(mode, "ls")==0)
+   xorriso->do_iso_rr_pattern= 2;
+ else {
+   sprintf(xorriso->info_text, "-iso_rr_pattern: unknown mode '%s'", mode);
+   Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FAILURE", 0);
+   return(0);
+ }
+ return(1);
+}
+
+
 /* Option -joliet "on"|"off" */
 int Xorriso_option_joliet(struct XorrisO *xorriso, char *mode, int flag)
 {
@@ -9619,6 +9766,10 @@ next_command:;
    if(end_ret!=2)
      {ret= 3; goto ex;}
 
+ } else if(strcmp(cmd,"errfile_log")==0) {
+   (*idx)+= 2;
+    ret= Xorriso_option_errfile_log(xorriso, arg1, arg2, 0);
+
  } else if(strcmp(cmd,"iso_rr_pattern")==0) {
    (*idx)++;
    ret= Xorriso_option_iso_rr_pattern(xorriso, arg1, 0);
@@ -10237,6 +10388,7 @@ end_sucessfully:;
    Xorriso_option_end(xorriso, 2);
  Xorriso_process_msg_queues(xorriso, 0);
  ret= Xorriso_make_return_value(xorriso, 0);
+ Xorriso_process_errfile(xorriso, 0, "xorriso end", 0, 1);
  Xorriso_destroy(&xorriso,1);
  exit(ret);
 }
diff --git a/xorriso/xorriso_private.h b/xorriso/xorriso_private.h
index 27d81f1b..e4d55ddf 100644
--- a/xorriso/xorriso_private.h
+++ b/xorriso/xorriso_private.h
@@ -174,6 +174,10 @@ struct XorrisO { /* the global context of xorriso */
  int problem_status; /* Severity rank number. 0= no abort condition present */
  char problem_status_text[20];
 
+ char errfile_log[SfileadrL]; /* for -errfile_log */
+ int errfile_mode; /* bit0= marked */
+ FILE *errfile_fp;
+
  char return_with_text[20];
  int return_with_severity;
  int return_with_value;