diff --git a/Unbuntu-20.04-encrypt-ZFS-install.md b/Unbuntu-20.04-encrypt-ZFS-install.md
index 656421a..a047f30 100644
--- a/Unbuntu-20.04-encrypt-ZFS-install.md
+++ b/Unbuntu-20.04-encrypt-ZFS-install.md
@@ -69,4 +69,8 @@ you may be interrested if you are on a laptop in : [right fit swap for laptop hi
 
 ## start installation
 
-Run ubiquity to start the installer and install as normal, selecting “Use entire disk” and the option to use ZFS.
\ No newline at end of file
+Run ubiquity to start the installer and install as normal, selecting “Use entire disk” and the option to use ZFS.
+
+## questions to be solves
+
+* what happen if zpool passwd is not given at boot shutdown ?
\ No newline at end of file