diff --git a/debian.cfg b/debian.cfg
index 8c89b9d..55f4460 100644
--- a/debian.cfg
+++ b/debian.cfg
@@ -65,6 +65,7 @@ d-i preseed/early_command string \
 d-i partman/early_command string \
   debconf-set partman-auto/disk "$(list-devices disk | head -n1)"
 
+# debian 10 没有 /target/etc/ssh/sshd_config.d/ 文件夹
 d-i preseed/late_command string \
   echo "PermitRootLogin yes" >/target/etc/ssh/sshd_config.d/01-permitrootlogin.conf || \
-  echo "PermitRootLogin yes" >/target/etc/ssh/sshd_config
+  echo "PermitRootLogin yes" >>/target/etc/ssh/sshd_config