diff --git a/scripts/ci/make_mnt_writeable.sh b/scripts/ci/make_mnt_writeable.sh
index 54a791eb3a5c9..028b4e571f0ee 100755
--- a/scripts/ci/make_mnt_writeable.sh
+++ b/scripts/ci/make_mnt_writeable.sh
@@ -17,6 +17,14 @@
 # under the License.
 function make_mnt_writeable {
     set -x
+    echo "Investigating node disks"
+    lsblk
+    sudo blkid
+    echo "Check that we have expected /mnt to be a separate mount"
+    if ! lsblk | grep -q /mnt; then
+        echo "/mnt is missing as a separate mount, runner misconfigured!"
+        exit 42
+    fi
     echo "Checking free space!"
     df -H
     echo "Cleaning /mnt just in case it is not empty"