diff --git a/dd-reinstall.sh b/dd-reinstall.sh
index 89b0271..e9711ea 100644
--- a/dd-reinstall.sh
+++ b/dd-reinstall.sh
@@ -1,18 +1,18 @@
 #!/bin/bash
 # DD 重装系统 - 引导脚本
 # 一键: bash <(curl -sL mjjtop.com/dd)
-# 下载脚本到本地再执行，避免管道模式 stdin 冲突
+# 下载核心脚本到本地再 exec 执行，彻底释放 stdin
 
-set -e
-SCRIPT_URL="https://mjjtop.com/admin/dd-reinstall/raw/branch/main/dd-core.sh"
+CORE_URL="https://mjjtop.com/admin/dd-reinstall/raw/branch/main/dd-core.sh"
+TMP="/tmp/dd-core-$$.sh"
 
 if command -v wget &>/dev/null; then
-  wget --no-check-certificate -qO /tmp/dd-reinstall.sh "$SCRIPT_URL"
+  wget --no-check-certificate -qO "$TMP" "$CORE_URL"
 elif command -v curl &>/dev/null; then
-  curl -fsSL -o /tmp/dd-reinstall.sh "$SCRIPT_URL"
+  curl -fsSL -o "$TMP" "$CORE_URL"
 else
   echo "错误: 需要 wget 或 curl" && exit 1
 fi
 
-chmod +x /tmp/dd-reinstall.sh
-bash /tmp/dd-reinstall.sh
+chmod +x "$TMP"
+exec bash "$TMP"