diff --git a/scripts/image/backup.sh b/scripts/image/backup.sh
index 33f086d..c59e480 100644
--- a/scripts/image/backup.sh
+++ b/scripts/image/backup.sh
@@ -5,17 +5,7 @@
 source "$(dirname "$(readlink -f "${0}")")/base.sh" || (echo "Loading base.sh failed." && exit 1)
 info "Backupscript for memory devices started..."
 echo
-info "Actual mounted devices:"
-echo
-ls -lasi /dev/ | grep -E "sd|mm"
-echo
-while [ ! -b "$ifi" ]
-	do
-		info "Please select the correct device."
-		question "/dev/:"
-		read -r device
-		ifi="/dev/$device"
-done
+set_device_path
 while [ "$path" == "" ]
 	do
 		echo "Bitte Backupimagepfad+Namen zu $PWD eingeben:"
@@ -27,12 +17,12 @@ while [ "$path" == "" ]
 				ofi="$PWD/$path.img"
 		fi
 done
-info "Input file: $ifi"
+info "Input file: $device_path"
 info "Output file: $ofi"
 question "Please confirm by pushing \"Enter\". To cancel use \"Ctrl + Alt + C\""
 read -r bestaetigung && echo "$bestaetigung";
 
 info "Imagetransfer starts. This can take a while..." &&
-dd if="$ifi" of="$ofi" bs=1M status=progress || error "\"dd\" failed.";
+dd if="$device_path" of="$ofi" bs=1M status=progress || error "\"dd\" failed.";
 
 success "Imagetransfer successfull." && exit 0;
diff --git a/scripts/image/base.sh b/scripts/image/base.sh
index 32561f7..fb1f8d4 100644
--- a/scripts/image/base.sh
+++ b/scripts/image/base.sh
@@ -35,3 +35,41 @@ set_device_path(){
       error "$device_path is not valid device."
   fi
 }
+
+make_mount_folders(){
+  info "Preparing mount paths..." &&
+  boot_mount_path="$working_folder_path""boot/" &&
+  root_mount_path="$working_folder_path""root/" &&
+  mkdir -v "$boot_mount_path" &&
+  mkdir -v "$root_mount_path" ||
+  error
+}
+
+make_working_folder(){
+  working_folder_path="/tmp/raspberry-pi-tools-$(date +%s)/" &&
+  info "Create temporary working folder in $working_folder_path" &&
+  mkdir -v "$working_folder_path" ||
+  error
+}
+
+mount_partitions(){
+  info "Mount boot and root partition..." &&
+  mount "$boot_partition_path" "$boot_mount_path" &&
+  mount "$root_partition_path" "$root_mount_path" &&
+  info "The following mounts refering this setup exist:" && mount | grep "$working_folder_path" ||
+  error
+}
+
+mount_binds(){
+  info "Mount chroot environments..." &&
+  chroot_sys_mount_path="$root_mount_path""sys/" &&
+  chroot_proc_mount_path="$root_mount_path""proc/" &&
+  chroot_dev_mount_path="$root_mount_path""dev/" &&
+  chroot_dev_pts_mount_path="$root_mount_path""dev/pts" &&
+  mount --bind "$boot_mount_path" "$root_mount_path""/boot" &&
+  mount --bind /dev "$chroot_dev_mount_path" &&
+  mount --bind /sys "$chroot_sys_mount_path" &&
+  mount --bind /proc "$chroot_proc_mount_path" &&
+  mount --bind /dev/pts "$chroot_dev_pts_mount_path" ||
+  error
+}
diff --git a/scripts/image/chroot.sh b/scripts/image/chroot.sh
index 9d9202f..7122169 100644
--- a/scripts/image/chroot.sh
+++ b/scripts/image/chroot.sh
@@ -7,26 +7,15 @@ info "Starting chroot..."
 
 set_device_path
 
-info "Making mount dir..." &&
-mkdir -p /mnt/raspbian ||
-error
+make_working_folder
 
+make_mount_folders
 
-root_mount_path="/mnt/raspbian"
-boot_mount_path="/mnt/raspbian/boot"
 set_partition_paths
 
-info "Mount partitions..."
-mount -o rw "$boot_partition_path" "$boot_mount_path" ||
-mount -o rw "$root_partition_path" "$root_mount_path"  &&
-error
+mount_partitions
 
-info "Mount binds..." &&
-mount --bind /dev "$root_mount_path/dev/" &&
-mount --bind /sys "$root_mount_path/sys/" &&
-mount --bind /proc "$root_mount_path/proc/" &&
-mount --bind /dev/pts "$root_mount_path/dev/pts" ||
-error
+mount_binds
 
 info "ld.so.preload fix" &&
 sed -i 's/^/#CHROOT /g' "$root_mount_path/etc/ld.so.preload" ||
diff --git a/scripts/image/setup.sh b/scripts/image/setup.sh
index d4da1d4..49f0951 100644
--- a/scripts/image/setup.sh
+++ b/scripts/image/setup.sh
@@ -18,19 +18,15 @@ destructor(){
   umount -v "$boot_mount_path" || warning "Umounting $boot_mount_path failed!"
   rmdir -v "$root_mount_path" || warning "Removing $root_mount_path failed!"
   rmdir -v "$boot_mount_path" || warning "Removing $boot_mount_path failed!"
-  rmdir -v "$working_folder" || warning "Removing $working_folder failed!"
+  rmdir -v "$working_folder_path" || warning "Removing $working_folder_path failed!"
 }
 
-info "Define variables..."
-working_folder="/tmp/raspberry-pi-tools-$(date +%s)/";
-
 info "Checking if root..."
 if [ "$(id -u)" != "0" ];then
     error "This script must be executed as root!"
 fi
 
-info "Create temporary working folder in $working_folder";
-mkdir -v "$working_folder"
+make_working_folder
 
 info "Configure user..."
 question "Please type in a valid username from which the SSH-Key should be copied:" && read -r origin_username;
@@ -151,21 +147,10 @@ if [[ -v image_checksum ]]
     warning "Verification is not possible. No checksum is defined."
 fi
 
-info "Preparing mount paths..."
-boot_mount_path="$working_folder""boot/"
-root_mount_path="$working_folder""root/"
-mkdir -v "$boot_mount_path"
-mkdir -v "$root_mount_path"
+make_mount_folders
 
 set_partition_paths
 
-mount_partitions(){
-  info "Mount boot and root partition..."
-  mount "$boot_partition_path" "$boot_mount_path" || error "Mount from $boot_partition_path to $boot_mount_path failed..."
-  mount "$root_partition_path" "$root_mount_path" || error "Mount from $root_partition_path to $root_mount_path failed..."
-  info "The following mounts refering this setup exist:" && mount | grep "$working_folder"
-}
-
 question "Should the image be transfered to $device_path?(y/n)" && read -r transfer_image
 if [ "$transfer_image" = "y" ]
   then
@@ -263,16 +248,8 @@ if [ -f "$origin_user_rsa_pub" ]
 fi
 
 info "Start chroot procedures..."
-info "Mount chroot environments..."
-chroot_sys_mount_path="$root_mount_path""sys/"
-chroot_proc_mount_path="$root_mount_path""proc/"
-chroot_dev_mount_path="$root_mount_path""dev/"
-chroot_dev_pts_mount_path="$root_mount_path""dev/pts"
-mount --bind "$boot_mount_path" "$root_mount_path""/boot" || error "Mounting $chroot_dev_mount_path failed."
-mount --bind /dev "$chroot_dev_mount_path" || error "Mounting $chroot_dev_mount_path failed."
-mount --bind /sys "$chroot_sys_mount_path" || error "Mounting $chroot_sys_mount_path failed."
-mount --bind /proc "$chroot_proc_mount_path" || error "Mounting $chroot_proc_mount_path failed."
-mount --bind /dev/pts "$chroot_dev_pts_mount_path" || error "Mounting $chroot_dev_pts_mount_path failed."
+
+mount_binds
 
 sed -i 's/^/#CHROOT /g' "$root_mount_path""etc/ld.so.preload"
 cp -v /usr/bin/qemu-arm-static "$root_mount_path""/usr/bin/" || error "Copy qemu-arm-static failed. The following packages are neccessary: qemu qemu-user-static binfmt-support."