diff --git a/backend.py b/backend.py
index 10fd89d..34f949b 100644
--- a/backend.py
+++ b/backend.py
@@ -2198,11 +2198,18 @@ def chroot_and_repair_grub(mount_point: str, target_disk: str,
         
         # 检查 /boot 是否已挂载（在 chroot 内）
         success, stdout, _ = run_command(
-            chroot_cmd_prefix + ["mount", "|", "grep", "boot"],
-            "检查 /boot 挂载状态",
+            chroot_cmd_prefix + ["mount"],
+            "检查挂载状态",
             timeout=5
         )
-        log_info(f"/boot 挂载状态: {stdout if success else '未显示或检查失败'}")
+        if success:
+            boot_mounts = [line for line in stdout.split('\n') if 'boot' in line.lower()]
+            if boot_mounts:
+                log_info(f"/boot 挂载状态: {', '.join(boot_mounts)}")
+            else:
+                log_info("/boot 挂载状态: 未找到相关挂载")
+        else:
+            log_info("/boot 挂载状态: 检查失败")
         
         # 方法1: 使用 grub2-editenv 创建
         editenv_cmd = None