diff --git a/.gitignore b/.gitignore
index 5af8f1b..2d38284 100644
--- a/.gitignore
+++ b/.gitignore
@@ -35,3 +35,8 @@
 # Astyle
 *.orig
 
+/build
+/bin
+
+reHDD
+
diff --git a/bin_util/shred b/bin_util/shred
new file mode 100755
index 0000000..df459fb
Binary files /dev/null and b/bin_util/shred differ
diff --git a/docu/diagrams/refurbishingHddTool.drawio b/docu/diagrams/refurbishingHddTool.drawio
deleted file mode 100644
index 3667556..0000000
--- a/docu/diagrams/refurbishingHddTool.drawio
+++ /dev/null
@@ -1 +0,0 @@
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\ No newline at end of file
diff --git a/docu/diagrams/refurbishingHddTool.pdf b/docu/diagrams/refurbishingHddTool.pdf
deleted file mode 100644
index 6989d9c..0000000
Binary files a/docu/diagrams/refurbishingHddTool.pdf and /dev/null differ