diff --git a/04_FormatStick.cmd b/04_FormatStick.cmd
index 3e31476..7947270 100644
--- a/04_FormatStick.cmd
+++ b/04_FormatStick.cmd
@@ -39,6 +39,24 @@ set DISK=
   goto askdisk
 :CONT1
 
+set FS=
+:askfs
+  set /p FS="Please select filesystem (exfat or fat32) [exfat]: "
+  if /i "%FS%" EQU "fat32" (
+    GOTO CONT2
+  )
+  if /i "%FS%" EQU "exfat" (
+    GOTO CONT2
+  )
+  if /i "%FS%" EQU "" (
+    set FS=exfat
+    GOTO CONT2
+  )
+  echo Please enter "exfat" or "fat32".
+  goto askfs
+:CONT2
+echo selected: %FS%
+
 set LABEL=
 set /p LABEL="Please enter a label for the new disk: "
 
@@ -48,7 +66,7 @@ set answer=
 :askyes
   set /p answer="REALLY delete disk %DISK% (Y/N)? "
   if /i "%answer:~,1%" EQU "Y" (
-    GOTO CONT2
+    GOTO CONT3
   )
   if /i "%answer:~,1%" EQU "N" (
     echo ABORT.
@@ -57,7 +75,7 @@ set answer=
   )
   echo Please type Y or N.
   goto askyes
-:CONT2
+:CONT3
 
 rem =====
 rem MAIN
@@ -69,7 +87,7 @@ rem =====
   @echo.convert MBR
   @echo.create partition primary
   @echo.select partition 1
-  @echo.format fs=exfat LABEL="%LABEL%" quick
+  @echo.format fs="%FS%" LABEL="%LABEL%" quick
   @echo.active
   @echo.exit
   @echo.