diff --git a/xorriso-dd-target/xorriso-dd-target b/xorriso-dd-target/xorriso-dd-target
index 0dbd97ef..210174b0 100755
--- a/xorriso-dd-target/xorriso-dd-target
+++ b/xorriso-dd-target/xorriso-dd-target
@@ -74,7 +74,7 @@ print_usage() {
   echo "                    The found device is then shown with advice, vendor,"
   echo "                    and model. Option -DO_WRITE is obeyed if given."
   echo " -list_all          Print list of all found devices with advice, vendor"
-  echo "                    and model, One per line. Ignore any device names."
+  echo "                    and model. One per line. Ignore any device names."
   echo "                    Ignore -DO_WRITE."
   echo " -with_vendor_model Print vendor and model with each submitted device."
   echo
@@ -89,7 +89,6 @@ print_usage() {
   echo "                    any further filesystem type is acceptable on that"
   echo "                    device. Else only ISO 9660 and VFAT are accepted."
   echo " -with_sudo         Run '$lsblk_cmd -o FSTYPE' by sudo."
-  echo "                    If so, consider to enable this without password."
   echo "                    If no filesystems are detected and the program"
   echo "                    has no superuser power, the device is not advised."
   echo "                    If -DO_WRITE is given, run umount and dd by sudo." 
@@ -230,11 +229,11 @@ arg_interpreter() {
     have_su_power=y
   elif test -n "$with_sudo"
   then
-    echo "Testing sudo to possibly get password prompting done now:"
+    echo "Testing sudo to possibly get password prompting done now:" >&2
     if sudo $lsblk_cmd -h >/dev/null
     then
-      echo "sudo $lsblk_cmd seems ok."
-      echo
+      echo "sudo $lsblk_cmd seems ok." >&2
+      echo >&2
       sudo_cmd=sudo
       have_su_power=y
     else
@@ -247,13 +246,13 @@ arg_interpreter() {
 ## Trying to find the desired device by watching plug-in effects
 plug_in_watcher() {
   found_devices=
-  echo
-  echo "Caused by option -plug_test: Attempt to find the desired device"
-  echo "by watching it appear after being plugged in."
-  echo
-  echo "Step 1:"
-  echo "Please make sure that the desired target device is plugged _out_ now."
-  echo "Press the Enter key when ready."
+  echo >&2
+  echo "Caused by option -plug_test: Attempt to find the desired device" >&2
+  echo "by watching it appear after being plugged in." >&2
+  echo >&2
+  echo "Step 1:" >&2
+  echo "Please make sure that the desired target device is plugged _out_ now." >&2
+  echo "Press the Enter key when ready." >&2
   read dummy
   old_device_list=' '$($lsblk_cmd -d -n -o NAME  | grep -v '^sr[0-9]' | grep -v '^fd[0-9]' | tr '\n\r' '  ')' '
 
@@ -261,12 +260,12 @@ plug_in_watcher() {
 # <<< Their presence in new_device_list will let them appear as fresh plugs
 # old_device_list=' '$(echo -n $old_device_list | sed -e 's/sd[e-f]//')' '
 
-  echo "Found and noted as _not_ desired: $old_device_list"
-  echo
-  echo "Step 2:"
-  echo "Please plug in the desired target device and then press the Enter key."
+  echo "Found and noted as _not_ desired: $old_device_list" >&2
+  echo >&2
+  echo "Step 2:" >&2
+  echo "Please plug in the desired target device and then press the Enter key." >&2
   read dummy
-  echo -n "Waiting up to 10 seconds for a new device to be listed ..."
+  echo -n "Waiting up to 10 seconds for a new device to be listed ..." >&2
   end_time="$(expr $(date +'%s') + 10)"
   while test $(date +'%s') -le "$end_time"
   do
@@ -274,7 +273,7 @@ plug_in_watcher() {
     if test "$old_device_list" = "$new_device_list"
     then
       sleep 1
-      echo -n '.'
+      echo -n '.' >&2
     else
       for i in $new_device_list
       do
@@ -287,7 +286,7 @@ plug_in_watcher() {
       done
     fi
   done
-  echo
+  echo >&2
   if test -z "$found_devices"
   then
     echo "SORRY: No new candidate device was found." >&2
@@ -296,24 +295,24 @@ plug_in_watcher() {
   num=$(echo $found_devices | wc -w)
   if test "$num" -gt 1
   then
-    echo "SORRY: More than one new candidate device appeared: $found_devices"
+    echo "SORRY: More than one new candidate device appeared: $found_devices" >&2
     return 9
   fi
-  echo "Found and noted as desired device: $found_devices"
+  echo "Found and noted as desired device: $found_devices" >&2
   if test -n "$devs"
   then
-    echo "(-plug_test is overriding device list given by arguments: $devs )"
+    echo "(-plug_test is overriding device list given by arguments: $devs )" >&2
   fi
   if test -n "$list_all"
   then
-    echo "(-plug_test is overriding -list_all)"
+    echo "(-plug_test is overriding -list_all)" >&2
     list_all=
   fi
   devs_named=y
   with_vendor_model=y
   show_reasons=y
   devs=$(echo -n $found_devices)
-  echo
+  echo >&2
   return 0
 }
 
@@ -520,6 +519,21 @@ write_image() {
     echo "No executable program umount found in: $sudo_x_dir_list" >&2
     return 6
   fi
+
+  echo "Looking for mount points of $2:"
+  partitions=$($lsblk_cmd -n -p -o NAME /dev/"$2" | grep -v '^'/dev/"$2"'$' \
+               | sed -e 's/[^a-zA-Z0-9_+@:.,/-]//g' | tr '\n\r' '  ')
+  mounted_devs=
+  for i in /dev/"$2" $partitions
+  do
+    # Show the found mount lines and add their device paths to list
+    mount_line=$(mount | grep '^'"$i"' ')
+    if test -n "$mount_line"
+    then
+      echo "  $mount_line"
+      mounted_devs="$mounted_devs $i"
+    fi
+  done
   if test -n "$dummy_force"
   then
     echo "AGAINST THE ADVICE BY THIS PROGRAM, a daring user could do:"
@@ -528,17 +542,6 @@ write_image() {
   then
     echo "Would do if not -dummy:"
   fi
-
-  partitions=$($lsblk_cmd -n -p -o NAME /dev/"$2" | grep -v '^'/dev/"$2"'$' \
-               | sed -e 's/[^a-zA-Z0-9_+@:.,/-]//g' | tr '\n\r' '  ')
-  mounted_devs=
-  for i in /dev/"$2" $partitions
-  do
-    if mount | grep '^'"$i"' ' >/dev/null
-    then
-      mounted_devs="$mounted_devs $i"
-    fi
-  done
   if test -n "$mounted_devs"
   then
     for i in $mounted_devs
@@ -573,6 +576,8 @@ write_image() {
     echo "--- not activated yet ---"
   fi
 
+  # >>> ??? Erase possible GPT backup table at end of device ?
+
   if test -n "$dummy_force"
   then
     echo "BE SMART. BE CAUTIOUS. BEWARE."
@@ -606,7 +611,7 @@ then
   num_devs=$(echo $devs| wc -w)
   if test -n "$dummy_force" -a "$num_devs" -ne 1
   then
-    echo "SORRY: Refusing -dummy_force with not exactly one device." >&2
+    echo "SORRY: Refusing -dummy_force with not exactly one device given." >&2
     exit 10
   fi
   if test -n "$dummy_force" -a -n "$dummy_run" -a "$num_cand" -ne 1 
@@ -629,19 +634,19 @@ then
       if test -n "$do_plug_test"
       then
         echo
-        echo "Step 3:"
+        echo "Step 3:" >&2
         if test -n "$dummy_run"
         then
-          echo "This would be the last chance to abort. Press Enter to see -dummy report."
+          echo "This would be the last chance to abort. Press Enter to see -dummy report." >&2
         else
-          echo "Last chance to abort. Press Enter to start REAL WRITING."
+          echo "Last chance to abort. Press Enter to start REAL WRITING." >&2
         fi
         read dummy
       fi
       write_image "$image_file" $candidates
       exit $?
     else
-      echo "Would write to /dev/$candidates if an -image_file were given." >&2
+      echo "Would write to /dev/$candidates if an -image_file were given."
       exit 0
     fi
   elif test "$num_cand" -gt 1
@@ -651,7 +656,7 @@ then
     with_vendor_model=y
     devs="$candidates"
     list_devices >&2
-    echo "HINT: Unplug the unwanted devices from the machine,"
+    echo "HINT: Unplug the unwanted devices from the machine," >&2
     echo "      or work with option -plug_test," >&2
     echo "      or add the desired name out of {$(echo $candidates | sed -e 's/ /,/g')} as additional argument." >&2
     exit 3
@@ -662,7 +667,7 @@ then
     else
       echo "NO CANDIDATE FOR TARGET DEVICE FOUND !" >&2
     fi
-    echo "Overall available devices:"
+    echo "Overall available devices:" >&2
     list_all=y
     show_reasons=y
     with_vendor_model=y