when using double quotes, the contents are parsed. This will break any hashes for `encpasswd` that contain `$` when `42_grml` (grub-mkconfig helper script for Grml rescue systems) is executed
# To set any specific bootoptions for rescue images
# present in /boot/grml just set and enable the following option:
# To set any specific bootoptions for rescue images
# present in /boot/grml just set and enable the following option:
-# CUSTOM_BOOTOPTIONS="ssh=password lang=de"
+# CUSTOM_BOOTOPTIONS='ssh=password lang=de'