diff --git a/debian.cfg b/debian.cfg
index 0dd31b6..bcf3960 100644
--- a/debian.cfg
+++ b/debian.cfg
@@ -36,11 +36,18 @@ d-i passwd/root-login boolean true
 d-i time/zone string Asia/Shanghai
 
 # B.4.7. 分区
-d-i partman-auto/method string manual
+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 ext3                       \
+                      method{ format } format{ }              \
+                      use_filesystem{ } filesystem{ ext3 }    \
+                      mountpoint{ / }                         \
+              .                                               \
 d-i partman-partitioning/confirm_write_new_label boolean true
-d-i partman/choose_partition select manual
+d-i partman/choose_partition select finish
 d-i partman/confirm boolean true
 d-i partman/confirm_nooverwrite boolean false