cp was not recursive whan copying files on USB key

init.sh

@@ -147,19 +147,17 @@ then
     create_dir $MOUNT_DIR
     mount ${dest}1 $MOUNT_DIR
     echo "copying all file to USB drive"
-    cp ${TMP_DIR}/* $MOUNT_DIR &> /dev/null
-    sync
+    cp -R ${TMP_DIR}/* $MOUNT_DIR &> /dev/null
     umount $MOUNT_DIR
+    echo Unmounting key, please wait ...
+    sleep 5
     # Make key bootable if bios.
     if [[ $BOOT_TYPE == "bios" ]]
     then
         # In this mode, we need to write syslinux MBR.
         echo "Writing syslinux mbr.ini fo $dest"
         dd bs=440 count=1 conv=notrunc if=${syslinux_mod}/${BOOT_TYPE}/mbr.bin of=${dest}
-        sleep 5
-        #cd ${TMP_DIR}/syslinux-${SYSLINUX_VERSION}/bios/linux/
         syslinux --directory syslinux --install ${dest}1
-        cd $current_dir
     fi 
     exit 0
 fi