diff -Nru mkusb-12.4.2/debian/changelog mkusb-12.4.3/debian/changelog
--- mkusb-12.4.2/debian/changelog	2020-02-16 18:55:59.000000000 +0000
+++ mkusb-12.4.3/debian/changelog	2020-03-03 13:44:46.000000000 +0000
@@ -1,3 +1,10 @@
+mkusb (12.4.3-1ubuntu1) xenial; urgency=medium
+
+  * mkusb-plug: mkusb-sedd: puer: select label depending on
+  * Ubuntu version (to cater for 'writable' in Focal Fossa)
+
+ -- Nio Wiklund <nio.wiklund@gmail.com>  Tue, 03 Mar 2020 14:44:46 +0100
+
 mkusb (12.4.2-1ubuntu8) xenial; urgency=medium
 
   * mkusb-plug: main: blklist=$(sudo lsblk -lo ...), l (list) added
diff -Nru mkusb-12.4.2/dus mkusb-12.4.3/dus
--- mkusb-12.4.2/dus	2020-02-09 16:59:20.000000000 +0000
+++ mkusb-12.4.3/dus	2020-03-03 13:44:46.000000000 +0000
@@ -140,8 +140,12 @@
 #                      p_target: red warning about size also for dialog and text
 #                      p_list: line 1294: redirected error output to /dev/null
 #                      mkusb-select: added menu entry for mkusb-plug
+# 2020-02-09  sudodus  version 12.4.2
+# 2020-03-03  sudodus  mkusb-plug: mkusb-sedd: puer: select label depending on
+#                      Ubuntu version (to cater for 'writable' in Focal Fossa)
+# 2020-03-03  sudodus  version 12.4.3
 
-version="${0##*/} 12.4.2"
+version="${0##*/} 12.4.3"
 
 inversvid="\0033[7m"
 resetvid="\0033[0m"
diff -Nru mkusb-12.4.2/mkusb-plug mkusb-12.4.3/mkusb-plug
--- mkusb-12.4.2/mkusb-plug	2020-02-16 18:53:47.000000000 +0000
+++ mkusb-12.4.3/mkusb-plug	2020-03-03 02:22:17.000000000 +0000
@@ -42,8 +42,9 @@
 #                      with status=progress and check for lsblk
 # 2020-02-14  sudodus  installer: test_host improved, offers xorriso-dd-target
 # 2020-02-16  sudodus  main: blklist=$(sudo lsblk -lo ...), l (list) added
+# 2020-03-03  sudodus  mkusb-sedd: select label depending on Ubuntu version
 
-version=2.5.4
+version=2.5.5
 
 inversvid="\0033[7m"
 resetvid="\0033[0m"
diff -Nru mkusb-12.4.2/mkusb-sedd mkusb-12.4.3/mkusb-sedd
--- mkusb-12.4.2/mkusb-sedd	2020-02-13 08:08:49.000000000 +0000
+++ mkusb-12.4.3/mkusb-sedd	2020-03-03 02:45:35.000000000 +0000
@@ -36,8 +36,9 @@
 #                      edits to make variable sucuess work as expected
 #                      test_host: check for dd version
 #                      with status=progress and check for lsblk
+# 2020-03-03  sudodus  puer: select label depending on Ubuntu version
 
-version=2.5.2
+version=2.5.3
 
 # global variables
 
@@ -56,6 +57,7 @@
 pd=false         # persistent debian
 pu=false         # persistent ubuntu
 uver=
+label=
 verfail=false
 task=
 source=
@@ -120,6 +122,50 @@
  echo -e "$redback puer: could not unmount a partition on the target device $resetvid"
  exit
 fi
+
+echo "..... Check version of ubuntu .................................................."
+
+lp1=$(mktemp -d)
+sudo mount -o loop "$source" "$lp1"
+if [ $? -ne 0 ]
+then
+ /bin/echo -e "$redback Loop mount of source file failed $resetvid"
+else
+ grep -i DISKNAME "$lp1/README.diskdefines" 2> /dev/null |grep buntu
+ if [ $? -eq 0 ]
+ then
+  pu=true
+  uver=$(grep DISKNAME "$lp1/README.diskdefines"|grep buntu|tr -s ' ' '\t'|cut -f 4)
+  if [ $? -eq 0 ]
+  then
+   /bin/echo -e "$blueback Ubuntu or an Ubuntu family flavour $resetvid"
+#   echo "$uver"
+   if [ "$uver" = "" ]
+   then
+    echo "*** Ubuntu version not found ***"  
+   elif test "$uver" \< "19.10"
+   then
+    echo "*** Ubuntu version $uver ***"
+   elif test "$uver" \= "19.10"
+   then
+    label="casper-rw"
+   elif test "$uver" \> "19.10"
+   then
+    label="writable"
+   fi
+  fi
+ fi
+fi
+sudo umount "$lp1"
+rmdir "$lp1"
+if [ "$label" == "" ]
+then
+ echo -e "$redback puer: cannot create persistence for this version $resetvid"
+ exit
+else
+ echo "label '$label' on partition for persistence"
+fi
+
 echo "$bar"
 echo -e "$inversvid Please wait until the process has finished and 'Done' is written $resetvid"
 
@@ -162,10 +208,11 @@
 
 echo "..... Create file system in partition for persistence .........................."
 
-mkfs.ext2 -L casper-rw "$partnr"
+mkfs.ext2 -L "$label" "$partnr"
 if [ $? -ne 0 ]
 then
- success=false
+  echo -e "$redback puer: cannot create 'ext' file system $resetvid"
+  success=false
 fi
 sleep 2
 }