diff --git a/README.md b/README.md
index 976f50c..1f04fe4 100644
--- a/README.md
+++ b/README.md
@@ -20,4 +20,3 @@ See also at [LUG-VS-Wiki Nützliche Scripte](https://lug-vs.org//lugvswiki/index
 |[utf8.sh](utf8.sh)|Convert text from e.g. Windows latin1 to utf8 text (e.g. in READMEs or other text (not for office documents))|
 |[wmf2svg.sh](wmf2svg.sh)|Example script converts WMF files in SVG to share it easily on the internet|
 |[write-exif-comment.sh](write-exif-comment.sh)|Write JPEG EXIF comment in all *.jpg files|
-
diff --git a/SchredderHDD.sh b/SchredderHDD.sh
index c1e0886..9a69529 100755
--- a/SchredderHDD.sh
+++ b/SchredderHDD.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 # Löscht ein komplettes Device
 # Version 0.2.0
-# Vom 2012-10-15 Aktualisert am 2021-01-24
+# Vom 2012-10-15 Aktualisert am 2022-01-11
 # (c) LUG-VS (GPL)
 
 ##Status anzeigen:
@@ -28,7 +28,7 @@ fi
 
 # Device zuweisen
 OF=$1
-SIZE=$(fdisk -l ${OF} 2> /dev/null | grep  ${OF} | sed -r "s/.*\, (.*) byte.*/\1/I") 
+SIZE=$(( $(fdisk -l ${OF} 2> /dev/null | grep  ${OF} | sed -r "s/.*\, (.*) byte.*/\1/I" | head -n1) )) 
 NAME=$(fdisk -l ${OF} 2> /dev/null | head -n2 | tail -n1 | sed 's/.*: *//' | sed 's/ *//')
 RNDOM=$(( 20 * 1024 * 1024 )) # Durchsatz bei Zufallszahlen in B/s
 NULLS=$((  40 * 1024 * 1024 )) # Durchsatz bei Zufallszahlen in B/s