diff --git a/contrib/liveusb/update_boot.sh b/contrib/liveusb/update_boot.sh
new file mode 100755
index 000000000..f0c87ca0e
--- /dev/null
+++ b/contrib/liveusb/update_boot.sh
@@ -0,0 +1,24 @@
+#!/bin/sh
+
+# author: Christian Berendt <mail@cberendt.net>
+
+set -x
+
+for kernel in $(find /boot/vmlinuz*); do
+    version=$(basename $kernel)
+    version=${version#*-}
+    if [ ! -e /boot/initramfs-$version.img ]; then
+        sudo /usr/bin/dracut /boot/initramfs-$version.img $version
+    fi
+done
+
+for image in $(find /boot/initramfs*); do
+    version=${image%.img}
+    version=${version#*initramfs-}
+    if [ ! -e /boot/vmlinuz-$version ]; then
+        sudo rm $image
+    fi
+done
+
+/usr/sbin/grub2-mkconfig -o /boot/grub2/grub.cfg
+