diff --git a/xorriso/base_obj.c b/xorriso/base_obj.c
index cb5b0d1b..bda163b4 100644
--- a/xorriso/base_obj.c
+++ b/xorriso/base_obj.c
@@ -168,6 +168,7 @@ int Xorriso_new(struct XorrisO ** xorriso,char *progname, int flag)
  m->do_follow_mount= 1;
  m->do_global_uid= 0;
  m->global_uid= 0;
+ m->isofs_size= 0;
  m->isofs_has_what= 0;
  m->tree_loaded= 0;
  m->rr_loaded= 0;
diff --git a/xorriso/drive_mgt.c b/xorriso/drive_mgt.c
index 0e015e51..0226f745 100644
--- a/xorriso/drive_mgt.c
+++ b/xorriso/drive_mgt.c
@@ -692,6 +692,7 @@ int Xorriso_aquire_drive(struct XorrisO *xorriso, char *adr, char *show_adr,
  }
  Xorriso_process_msg_queues(xorriso,0);
  isoburn_ropt_get_size_what(ropts, &size, &has_what);
+ xorriso->isofs_size= size;
  xorriso->isofs_has_what= has_what;
  isoburn_ropt_get_tree_loaded(ropts, &(xorriso->tree_loaded),
                               &(xorriso->rr_loaded));
@@ -1283,7 +1284,7 @@ int Xorriso_toc(struct XorrisO *xorriso, int flag)
  if(!(flag & 2))
    Xorriso_show_boot_info(xorriso, 1 | (flag & 8) | ((flag & 1) << 1));
 
- if(!(flag & 3)) {
+ if(xorriso->isofs_size > 0 && !(flag & 3)) {
    sprintf(respt, "ISO offers   :%s%s%s%s\n",
                   xorriso->isofs_has_what & 1 ? " Rock_Ridge" : "",
                   xorriso->isofs_has_what & 2 ? " Joliet" : "",
diff --git a/xorriso/xorriso_private.h b/xorriso/xorriso_private.h
index 91a0ea5e..69bffe6b 100644
--- a/xorriso/xorriso_private.h
+++ b/xorriso/xorriso_private.h
@@ -241,6 +241,7 @@ struct XorrisO { /* the global context of xorriso */
  int do_overwrite; /* 0=off, 1=on, 2=nondir */
  int do_reassure;  /* 0=off, 1=on, 2=tree */
 
+ uint32_t isofs_size;   /* Size of loaded ISO filesystem */
  int isofs_has_what;    /* bit0= hasRR
                            bit1= hasJoliet
                            bit2= hasIso1999
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 1cf7b9b4..6903fd38 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2020.12.07.184159"
+#define Xorriso_timestamP "2020.12.08.122752"