diff --git a/__pycache__/backend.cpython-39.pyc b/__pycache__/backend.cpython-39.pyc
index 0fb80e0..6b5029b 100644
Binary files a/__pycache__/backend.cpython-39.pyc and b/__pycache__/backend.cpython-39.pyc differ
diff --git a/backend.py b/backend.py
index a1d1a32..efa6ae4 100644
--- a/backend.py
+++ b/backend.py
@@ -1272,11 +1272,12 @@ def _manual_install_efi_files(mount_point: str, efi_target: str, efi_grub_file:
     # 可能的源路径：
     source_paths = []
     
-    # 1. 从 /boot/efi/EFI/centos 或 /boot/efi/EFI/redhat 复制
-    for subdir in ["centos", "redhat", "fedora", "rocky", "almalinux", "boot"]:
+    # 1. 从 /boot/efi/EFI/<distro> 复制
+    for subdir in ["centos", "redhat", "fedora", "rocky", "almalinux", "BOOT", "boot"]:
         source_paths.append(os.path.join(efi_firmware_dir, subdir, efi_grub_file))
         source_paths.append(os.path.join(efi_firmware_dir, subdir, "shimx64.efi"))
         source_paths.append(os.path.join(efi_firmware_dir, subdir, "shim.efi"))
+        source_paths.append(os.path.join(efi_firmware_dir, subdir, "grubx64.efi"))
     
     # 2. 从 /boot/efi/ 直接查找
     source_paths.append(os.path.join(mount_point, "boot/efi", efi_grub_file))
@@ -1286,6 +1287,21 @@ def _manual_install_efi_files(mount_point: str, efi_target: str, efi_grub_file:
     grub_modules_dir = os.path.join(mount_point, f"usr/lib/grub/{efi_target}")
     source_paths.append(os.path.join(grub_modules_dir, "grubx64.efi"))
     
+    # 4. CentOS/RHEL 特定的路径
+    source_paths.append(os.path.join(mount_point, "boot/efi/EFI/centos/grubx64.efi"))
+    source_paths.append(os.path.join(mount_point, "boot/efi/EFI/centos/shimx64.efi"))
+    source_paths.append(os.path.join(mount_point, "usr/share/grub2/grubx64.efi"))
+    
+    # 5. 尝试查找任何 .efi 文件
+    try:
+        if os.path.exists(efi_firmware_dir):
+            for root, dirs, files in os.walk(efi_firmware_dir):
+                for f in files:
+                    if f.endswith('.efi'):
+                        source_paths.append(os.path.join(root, f))
+    except:
+        pass
+    
     # 查找 shim 和 grub
     shim_source = None
     grub_source = None
@@ -1320,17 +1336,17 @@ def _manual_install_efi_files(mount_point: str, efi_target: str, efi_grub_file:
         if not grub_source and not shim_source:
             log_warning("未找到现有 EFI 文件，尝试使用 grub-mkimage 生成...")
             
-            # 构建 grub.efi 路径
-            grub_efi_output = os.path.join(target_dir, efi_grub_file)
-            
             # 获取模块列表（必需模块）
             modules = "part_gpt part_msdos fat ext2 xfs btrfs normal boot linux configfile search search_fs_uuid search_fs_file"
             
+            # 构建 chroot 内的输出路径
+            chroot_output_path = f"/boot/efi/EFI/{efi_bootloader_id}/{efi_grub_file}"
+            
             # 尝试使用 grub-mkimage 生成 EFI 文件
             chroot_cmd_prefix = ["sudo", "chroot", mount_point]
             mkimage_cmd = chroot_cmd_prefix + [
                 "grub2-mkimage",
-                "-o", grub_efi_output,
+                "-o", chroot_output_path,
                 "-O", efi_target,
                 "-p", "/boot/grub2",
             ] + modules.split()
@@ -1341,8 +1357,10 @@ def _manual_install_efi_files(mount_point: str, efi_target: str, efi_grub_file:
                 timeout=60
             )
             
-            if success and os.path.exists(grub_efi_output):
-                log_success(f"✓ 成功生成 EFI 文件: {grub_efi_output}")
+            # 检查主机路径上的文件是否生成成功
+            host_output_path = os.path.join(mount_point, chroot_output_path.lstrip('/'))
+            if success and os.path.exists(host_output_path):
+                log_success(f"✓ 成功生成 EFI 文件: {host_output_path}")
             else:
                 log_error(f"生成 EFI 文件失败: {stderr}")
                 return False