+# HYBRID_METHOD='manifold' # use manifold with ISOLINUX
+
+# Secure Boot method that should be used (amd64 only).
+# If unset defaults to "disabled" (which means no Secure Boot will be present)
+# The following approaches are supported:
+# debian: use the Debian GRUB version which requires a signed kernel,
+# this is the recommended way to use Secure Boot with Grml
+# ubuntu: use an older Ubuntu GRUB version which doesn't require a signed kernel,
+# though has a limited feature set only and requires customized GRUB
+# templates (the files shipped templates/boot/grub/ don't work as such)
+# SECURE_BOOT='disable' # do not enable Secure Boot (default)
+# SECURE_BOOT='debian' # use approach from Debian
+# SECURE_BOOT='ubuntu' # use approach from Ubuntu