diff --git a/debian.cfg b/debian.cfg
index 9c4a051..ed9f2b3 100644
--- a/debian.cfg
+++ b/debian.cfg
@@ -39,14 +39,14 @@ d-i time/zone string Asia/Shanghai
 d-i partman-auto/method string regular
 d-i partman-lvm/device_remove_lvm boolean true
 d-i partman-md/device_remove_md boolean true
-# d-i partman-auto/expert_recipe string               # \
-#     boot-root ::                                     # \
-#         5120 1 112640 ext4                            # \
-#             $primary{ } $bootable{ }                # \
-#             method{ format } format{ }              # \
-#             use_filesystem{ } filesystem{ ext4 }    \
-#             mountpoint{ / }                     # \
-#         .
+d-i partman-auto/expert_recipe string               \
+    boot-root ::                                     \
+        5120 1 112640 ext4                            \
+            $primary{ } $bootable{ }                \
+            method{ format } format{ }              \
+            use_filesystem{ } filesystem{ ext4 }    \
+            mountpoint{ / }                     \
+        .
 d-i partman-partitioning/confirm_write_new_label boolean true
 d-i partman/choose_partition select finish
 d-i partman/confirm boolean true