如果您的Windows映像无法使用，DISM（部署映像和服务管理）工具可以帮助您解决问题。DISM是一个命令行工具，用于准备和修复Windows映像 ( .wim ) 或虚拟硬盘（.vhd 和.vhdx）。它还可以帮助您准备Windows 预安装环境^{(Windows Preinstallation Environment)}( Windows PE )。

此工具内置在您的Windows系统中，您可以从^(Windows)Windows PowerShell或命令提示符^{(Command Prompt)}轻松访问它。DISM命令根据您要服务器的Windows版本以及映像的状态（离线或在线）而有所不同。^(Windows)

但是，许多用户在使用DSIM命令行工具在外部驱动器上修复或准备 Windows 10 映像备份时遇到问题。他们在尝试执行操作时收到以下错误消息：

找不到源文件。

在此页面上，您将了解在外部驱动器上运行 DISM以修复^{(run DISM)}Windows 10映像备份的正确方法。

脱机运行 DISM^{(Run DISM Offline)}以修复Windows 11/10 系统映像^{(System Image)}备份

首先，运行以下命令：

Dism.exe /Online /CheckHealth

当您使用/CheckHealth参数时，DISM工具将报告映像是否正常、可修复或不可修复。

• 如果图像不可修复，则应丢弃该图像并重新开始。
• 如果图像是可修复的，您可以使用/RestoreHealth参数来修复图像。

如果DISM工具不起作用，那么您必须清理Windows系统组件。

按^(Press)Windows键并搜索cmd。右键单击命令提示符^{(Command Prompt)}并以管理员^{(Administrator)}身份运行它。在命令提示符^{(Command Prompt)}窗口中，键入以下命令并按 ENTER：

Dism.exe /Online /Cleanup-Image /RestoreHealth /Source:C:\RepairSource\Windows

注意：^{(NOTE: )}在上述命令中，将C:RepairSourceWindows零件替换为修复源的实际位置。

脱机运行 DISM

如果您希望使用已安装的映像来修复脱机映像，您可以使用：

Dism /Image:C:\offline /Cleanup-Image /RestoreHealth /Source:C:\test\mount\windows

您还可以/LimitAccess在最后使用以防止DISM工具将Windows Update用作修复源或用作在线图像的备份修复源。

这些简单的命令将解决问题并成功让您在外部驱动器上使用DISM 。

提示：^(TIP:)您还可以使用 DISM 工具修复损坏的 Windows 更新系统文件。

Run DISM Offline to repair Windows 11/10 System Image backup

If your Windows image is unserviceable, the DISM (Deployment Imaging and Servicing Management) tool can help you fix the issue. DISM is a command-line tool that prepares and repairs Windows images (.wim) or virtual hard disks (.vhd and .vhdx). It can also help you prepare a Windows Preinstallation Environment (Windows PE).

This tool is inbuilt on your Windows system, and you can access it easily from the Windows PowerShell or Command Prompt. DISM commands vary based on the edition of Windows you want to server, as well as the state of the image (offline or online).

However, many users have experienced issues when using the DSIM command-line tool to repair or prepare Windows 10 image backup on an external drive. They get the following error message when they attempt to perform the operation:

The source files could not be found.

On this page, you will learn the correct way to run DISM on an external drive to repair Windows 10 image backup.

Run DISM Offline to repair Windows 11/10 System Image backup

First, run the following command:

Dism.exe /Online /CheckHealth

When you use the /CheckHealth argument, the DISM tool will report whether the image is healthy, repairable, or non-repairable.

• If the image is non-repairable, you should discard the image and start again.
• If the image is repairable, you can use the /RestoreHealth argument to repair the image.

If the DISM tool doesn’t work, then you have to clean up the Windows system components.

Press the Windows key and search for cmd. Right-click on Command Prompt and run it as an Administrator. In the Command Prompt window, type the following command and hit ENTER:

Dism.exe /Online /Cleanup-Image /RestoreHealth /Source:C:\RepairSource\Windows

NOTE: In the command above, substitute the C:\RepairSource\Windows part with the actual location of the repair source.

Run DISM offline

If you are looking to repair an offline image with the use of a mounted image, you can use:

Dism /Image:C:\offline /Cleanup-Image /RestoreHealth /Source:C:\test\mount\windows

You could also use /LimitAccess at the end to prevent the DISM tool from using Windows Update as a repair source or as a backup repair source for online images.

These simple commands will resolve the issue and successfully let you use DISM on external drives.

TIP: You can also fix corrupted Windows Update system files using DISM Tool.

Related posts

• 如何在Windows 11/10运行DISM修复Windows System Image

• 如何在Windows 10创建或恢复System Image

• 在Windows 10中使用DISM时，远程procedure call失败了错误

• 缺少操作System在Windows 11/10中没有Found error

• Run作为administrator option未显示或在Windows 11/10中工作

• 无法在Windows 11/10中拖放文件或文件夹

• 您的PC不支持Miracast - Windows 10错误

• Windows 10中的Rebuild Tokens.dat or Activation Tokens file

• 在Windows 10​​6计算机上检测到扫描仪错误

• 视窗10 Get Help应用程序无法正常工作

• Windows 11/10中的Microsoft Office Click-To-Run High CPU usage

• 常见VPN error代码的故障排除及对Windows 10解决方案

• Start Menu无法打开或Start Button在Windows 11/10中不起作用

• 已删除的Printer在Windows 10中重新出现并重返

• Intel Thunderbolt Dock software不适用于Windows 10

• Background Intelligent Transfer Service不在Windows 11/10工作

• Audio在Windows 10中没有响应响应的服务

• 无法从iPhone导入Photos到Windows 11/10 PC

• 如何解决在Windows 10 WiFi问题

• 无法在Windows 10映射Network drive