diff --git a/tsa/howto/upgrades/buster.mdwn b/tsa/howto/upgrades/buster.mdwn
index 65a9f210e74e41e035d7167fbbf919ec8eda2a4a..9470e1b49d6d56b7b995a76f65b413e6b757a023 100644
--- a/tsa/howto/upgrades/buster.mdwn
+++ b/tsa/howto/upgrades/buster.mdwn
@@ -43,7 +43,8 @@ Procedure
     download packages:
 
         sed -i 's/stretch/buster/g' /etc/apt/sources.list.d/* &&
-        apt update &&
+        apt update && apt -o APT::Get::Trivial-Only=true dist-upgrade &&
+        df -h &&
         apt -y -d upgrade &&
         apt -y -d dist-upgrade &&
         echo End of Step 4