diff --git a/README.en.md b/README.en.md
index 1193a51..eb7a11b 100644
--- a/README.en.md
+++ b/README.en.md
@@ -17,7 +17,7 @@ Reinstall server with one-click [中文](README.md)
 - Specifically tailored for low-spec machines, addressing insufficient memory that prevents network installation.
 - Automatically detect dynamic and static IPv4 / IPv6, eliminating the need to fill in IP / subnet mask / gateway.
 - Support ARM, BIOS, EFI boot, with original system supporting LVM, BTRFS.
-- No third-party custom packages included, all resources obtained in real-time from source sites.
+- No homemade packages included, all resources obtained in real-time from source sites.
 - Includes many comments.
 
 ## System Requirements
diff --git a/README.md b/README.md
index a3e845d..79921a8 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@
 - 专门适配低配小鸡，解决内存过少导致无法进行网络安装
 - 自动判断动静态 IPv4 / IPv6，无需填写 IP / 掩码 / 网关
 - 支持 ARM，支持 BIOS、EFI 引导，原系统支持 LVM、BTRFS
-- 不含第三方自制包，所有资源均实时从源站点获得
+- 不含自制包，所有资源均实时从源站点获得
 - 有很多注释
 
 ## 配置要求
diff --git a/reinstall.sh b/reinstall.sh
index b70e153..6e0325f 100644
--- a/reinstall.sh
+++ b/reinstall.sh
@@ -104,13 +104,14 @@ curl() {
 }
 
 is_in_china() {
-    if [ -z $_is_in_china ]; then
+    if [ -z "$_loc" ]; then
         # 部分地区 www.cloudflare.com 被墙
-        curl -L http://dash.cloudflare.com/cdn-cgi/trace |
-            grep -qx 'loc=CN' && _is_in_china=true ||
-            _is_in_china=false
+        _loc=$(curl -L http://dash.cloudflare.com/cdn-cgi/trace | grep '^loc=' | cut -d= -f2)
+        if [ -z "$_loc" ]; then
+            error_and_exit "Can not get location."
+        fi
     fi
-    $_is_in_china
+    [ "$_loc" = CN ]
 }
 
 is_in_windows() {
@@ -1893,6 +1894,8 @@ add_efi_entry_in_windows() {
 
 get_maybe_efi_dirs_in_linux() {
     # arch云镜像efi分区挂载在/efi，且使用 autofs，挂载后会有两个 /efi 条目
+    # openEuler 云镜像 boot 分区是 vfat 格式，但 vfat 可以当 efi 分区用
+    # TODO: 最好通过 lsblk/blkid 检查是否为 efi 分区类型
     mount | awk '$5=="vfat" || $5=="autofs" {print $3}' | grep -E '/boot|/efi' | sort -u
 }
 
diff --git a/trans.sh b/trans.sh
index 66a1999..77499ad 100644
--- a/trans.sh
+++ b/trans.sh
@@ -757,7 +757,7 @@ EOF
         {
             echo
             if [ -n "$enpx" ] && [ "$enpx" != "$ethx" ]; then
-                echo rename $enpx=$ethx >>$conf_file
+                echo rename $enpx=$ethx
             fi
             echo $mode $ethx
         } >>$conf_file
@@ -2234,15 +2234,15 @@ get_ci_installer_part_size() {
     # https://cloud-images.ubuntu.com/releases/24.04/release/ubuntu-24.04-server-cloudimg-amd64.img 500m
     # https://gentoo.osuosl.org/experimental/amd64/openstack/gentoo-openstack-amd64-systemd-latest.qcow2 800m
 
-    # openeuler 20.03 3g
-    if [ "$distro" = openeuler ]; then
-        echo 3GiB
+    if get_http_file_size_to size_bytes $img >&2 && [ -n "$size_bytes" ]; then
+        # 额外 +100M 文件系统保留大小 和 qcow2 写入空间
+        size_bytes_mb=$((size_bytes / 1024 / 1024 + 100))
+        # 最少 1g ，因为可能要用作临时 swap
+        echo "$((size_bytes_mb / 1024 + 1))GiB"
     else
-        if get_http_file_size_to size_bytes $img >&2 && [ -n "$size_bytes" ]; then
-            # 额外 +100M 文件系统保留大小 和 qcow2 写入空间
-            size_bytes_mb=$((size_bytes / 1024 / 1024 + 100))
-            # 最少 1g ，因为可能要用作临时 swap
-            echo "$((size_bytes_mb / 1024 + 1))GiB"
+        # openeuler 20.03 3g
+        if [ "$distro" = openeuler ] && [ "$releasever" = 20.03 ]; then
+            echo 3GiB
         else
             # 如果没获取到文件大小
             echo 2GiB
@@ -2338,13 +2338,7 @@ install_qcow_by_copy() {
     # alma 9 boot 分区的类型不是规定的 uuid
     # openeuler boot 分区是 fat 格式
     boot_part=$(lsblk /dev/nbd0p* --sort SIZE -no NAME,FSTYPE | grep -E 'ext4|xfs|fat' | awk '{print $1}' |
-        grep -vx "$os_part" | {
-        if [ -n "$efi_part" ]; then
-            grep -vx "$efi_part"
-        else
-            cat
-        fi
-    } | tail -1 | awk '{print $1}')
+        grep -vx "$os_part" | grep -vx "$efi_part" | tail -1 | awk '{print $1}')
 
     if $is_lvm_image; then
         os_part="mapper/$os_part"
@@ -3240,9 +3234,7 @@ install_windows() {
     if is_virt_contains kvm &&
         ! is_virt_contains aws; then
 
-        # 要区分 win10 / win11 驱动，虽然他们的 NT 版本号都是 10.0
-        # 但他们可能用不同的编译器编译
-        # 未来 inf 也有可能不同
+        # 要区分 win10 / win11 驱动，虽然他们的 NT 版本号都是 10.0，但驱动文件有区别
         # https://github.com/virtio-win/kvm-guest-drivers-windows/commit/9af43da9e16e2d4bf4ea4663cdc4f29275fff48f
         # vista >>> 2k8
         # 10 >>> w10
@@ -3250,7 +3242,6 @@ install_windows() {
         virtio_sys=$(
             case "$(echo "$product_ver" | to_lower)" in
             'vista') echo 2k8 ;; # 没有 vista 文件夹
-            '2025') echo 2k22 ;; # 暂时没有
             *)
                 case "$product_type" in
                 WinNT) echo "w$product_ver" ;;