diff --git a/doc/notes b/doc/notes
new file mode 100644
index 0000000..afd4b2e
--- /dev/null
+++ b/doc/notes
@@ -0,0 +1,2 @@
+initrd:
+https://help.ubuntu.com/community/LiveCDCustomization#Removing_the_.28Casper.29_Autologina
diff --git a/src/func/check_update b/src/func/check_update
index 79d6d99..b8b11fd 100755
--- a/src/func/check_update
+++ b/src/func/check_update
@@ -7,7 +7,7 @@ function check_update() {
     if curl https://raw.githubusercontent.com/6543/remaster/master/changes/remaster.md | diff - <(zcat <ROOTDIR>/usr/share/doc/remaster/changelog.gz ); then
 			echo 'INFO: Programm Aktuell'
 	else
-			echo 'WARNUNG: neue Version verfügbar'
+			echo 'WARNUNG: Ausgeführte Version entspricht nicht dem offiziellen Release'
     fi
 }
 
diff --git a/src/func/filesystem_extract b/src/func/filesystem_extract
index 2ca5bdb..acc43fb 100755
--- a/src/func/filesystem_extract
+++ b/src/func/filesystem_extract
@@ -2,6 +2,9 @@
 #remaster lib
 [ -d "<LIBDIR>" ] || { echo "LIBDIR not exist"; exit 1; }
 
+#dependency
+source <LIBDIR>/func/filesystem_get_type
+
 #filesystem_extract [filesystem_img_source] [chroot_path]
 function filesystem_extract() {
 	echo "extract filesystem ..."