core: 通过检查命令是否存在，判断 cygwin 是否成功安装

README.en.md

@@ -210,7 +210,7 @@ bash reinstall.sh dd --img https://example.com/xxx.xz
 > Can monitor the progress through various methods (SSH, HTTP 80 port, VNC in the background, serial console).
 > <br />Even if errors occur during the installation process, you can still install to Alpine via SSH by running `/trans.sh alpine`
 
-### Feature 3: Reboot to <img width="16" height="16" src="https://www.alpinelinux.org/alpine-logo.ico" /> Alpine Rescue System (Live OS)
+### Feature 3: Reboot to <img width="16" height="16" src="https://www.alpinelinux.org/alpine-logo.ico" /> Alpine Live OS (RAM OS)
 
 - You can use SSH to backup/restore disk, manually perform DD operations, modify partitions, and manually install Alpine, Arch, Gentoo, and other systems.
 - Username `root`, Default password `123@@@`
@@ -254,7 +254,10 @@ bash reinstall.sh netboot.xyz
   - Hyper-V Server \*
   - Azure Stack HCI \*
 
-#### Method 1: Let the Script Automatically Search for ISO (Recommended)
+#### ~~Method 1: Let the Script Automatically Search for ISO (Recommended)~~
+
+> [!CAUTION]
+> The ISO repository currently prohibits direct link downloads, so this method is no longer effective.
 
 - Typically, Windows releases new official ISOs every month, which integrate the latest system patches, avoiding the need to download a bunch of updates right after installation.
 - The script will search for ISOs from <https://massgrave.dev/genuine-installation-media>, a site that collects monthly released ISOs, ensuring that the ISOs found by the script are the official latest versions.

README.md

@@ -210,7 +210,7 @@ bash reinstall.sh dd --img https://example.com/xxx.xz
 > 可通过多种方式（SSH、HTTP 80 端口、后台 VNC、串行控制台）查看安装进度。
 > <br />即使安装过程出错，也能通过 SSH 运行 `/trans.sh alpine` 安装到 Alpine。
 
-### 功能 3: 重启到 <img width="16" height="16" src="https://www.alpinelinux.org/alpine-logo.ico" /> Alpine Live OS（救援系统）
+### 功能 3: 重启到 <img width="16" height="16" src="https://www.alpinelinux.org/alpine-logo.ico" /> Alpine Live OS（内存系统）
 
 - 可用 ssh 连接，进行备份/恢复硬盘、手动 DD、修改分区、手动安装 Alpine/Arch/Gentoo 等操作
 - 用户名 `root` 默认密码 `123@@@`
@@ -254,7 +254,10 @@ bash reinstall.sh netboot.xyz
   - Hyper-V Server \*
   - Azure Stack HCI \*
 
-#### 方法 1: 让脚本自动查找 ISO （推荐）
+#### ~~方法 1: 让脚本自动查找 ISO~~
+
+> [!CAUTION]
+> 目前该 ISO 仓库禁止了直链下载，因此该方法已失效
 
 - 通常情况下 Windows 每个月都会发布新的官方 ISO，集成了最新的系统补丁，避免了刚安装好系统就要下载一堆补丁
 - 脚本会从 <https://massgrave.dev/genuine-installation-media> 查找 ISO，该网站收录了每月发布的 ISO，因此脚本查找到的 ISO 都是官方最新版

reinstall.bat

@@ -6,6 +6,9 @@ set confhome=https://raw.githubusercontent.com/bin456789/reinstall/main
 set confhome_cn=https://jihulab.com/bin456789/reinstall/-/raw/main
 rem set confhome_cn=https://www.ghproxy.cc/https://raw.githubusercontent.com/bin456789/reinstall/main
 
+set pkgs=curl,cpio,p7zip,ipcalc,dos2unix,jq,xz,gzip,zstd,openssl,bind-utils,libiconv,binutils
+set cmds=curl,cpio,p7zip,ipcalc,dos2unix,jq,xz,gzip,zstd,openssl,nslookup,iconv,ar
+
 rem 65001 代码页会乱码
 
 rem 不要用 :: 注释
@@ -54,10 +57,7 @@ if not errorlevel 1 (
     set mirror=http://mirrors.kernel.org
 )
 
-rem pkgs 改动了才重新运行 Cygwin 安装程序
+call :check_cygwin_installed || (
-set pkgs=curl,cpio,p7zip,bind-utils,ipcalc,dos2unix,binutils,jq,xz,gzip,zstd,openssl,libiconv
-set tags=%tmp%\cygwin-installed-%pkgs%
-if not exist "%tags%" (
     rem win10 arm 支持运行 x86 软件
     rem win11 arm 支持运行 x86 和 x86_64 软件
     rem wmic os get osarchitecture 显示中文
@@ -122,13 +122,14 @@ if not exist "%tags%" (
         --only-site ^
         --site !site! ^
         --root %SystemDrive%\cygwin ^
-        --local-package-dir %tmp%\cygwin-local-package-dir ^
+        --local-package-dir %~dp0cygwin-local-package-dir ^
-        --packages %pkgs% ^
+        --packages %pkgs%
-        && type nul >"%tags%"
 
+    rem 检查 Cygwin 是否成功安装
     if errorlevel 1 (
-            echo "Failed to install Cygwin."
+        goto :install_cygwin_failed
-            exit /b 1
+    ) else (
+        call :check_cygwin_installed || goto :install_cygwin_failed
     )
 )
 
@@ -189,3 +190,17 @@ exit /b
 :download_failed
 echo Download failed.
 exit /b 1
+
+:install_cygwin_failed
+echo Failed to install Cygwin.
+exit /b 1
+
+:check_cygwin_installed
+set "cmds_space=%cmds:,= %"
+for %%c in (%cmds_space%) do (
+    if not exist "%SystemDrive%\cygwin\bin\%%c" if not exist "%SystemDrive%\cygwin\bin\%%c.exe" (
+        echo %%c not found.
+        exit /b 1
+    )
+)
+exit /b 0