-# GRUB is running or if it's a full featured GRUB version, the former doesn't allow running cpuid
-if cpuid ; then
- echo "It looks like Secure Boot is NOT enabled."
- set grml_secureboot=false
- export grml_secureboot
-else
+# GRUB is running or if it's a full featured GRUB version, the former doesn't
+# fail with invalid usage, while the later will fail with "error: device name required."
+if probe ; then