要创建用于安装 Windows 10 的可启动 USB 驱动器，首选方法当然是使用 Windows 10 媒体创建工具。但是，如果媒体创建工具不适合您，或者您不喜欢使用它怎么办？别担心，您还可以从 ISO 映像文件创建 Windows 10 可启动 USB 驱动器，而无需使用媒体创建工具。
本文将向您展示如何从 ISO 创建 Windows 10 可启动 USB 驱动器来安装 Windows 10。确保您已将 Windows 10 ISO 文件下载到计算机上，然后按照以下方法和步骤操作。
Rufus 是一款开源应用程序，用于轻松创建可启动 USB 闪存驱动器或 Windows To Go live USB 驱动器。以下是如何使用 Rufus 从 ISO 映像轻松创建 Windows 10 可启动 USB 闪存驱动器。
1.将 U 盘插入电脑，并将 U 盘上的数据（如果有）备份到其他地方。
2.下载Rufus程序到你的电脑上，然后直接运行，无需安装。
3.在 Rufus 上，设置以下选项来创建 Windows 10 可启动 USB 闪存驱动器。
4.只需等待创建完成即可。这通常需要 15 到 30 分钟。
5.当进度条达到 100% 并显示 Ready 时，表示 Rufus 已成功从 iSO 创建 Windows 10 可启动 USB 驱动器。
iSumsoft ShapeISO 是另一个功能强大且易于使用的工具，可以帮助您轻松从 ISO 映像文件创建 Windows 10 可启动 USB 驱动器。
第1步：在您的电脑上下载并安装iSumsoft ShapeISO。安装后，启动此工具。
步骤 2：选择刻录选项，单击文件图标导入 Windows 10 ISO 文件，单击刷新图标显示已连接的 USB 驱动器，然后单击开始按钮。该工具将立即开始将 Windows 10 ISO 文件刻录到 USB 驱动器，以创建可启动的 Windows 10 USB 驱动器。
第3步：等待该过程完成。当软件页面显示ISO映像已成功刻录到USB驱动器时，Windows 10可启动USB已创建。
如果您想在不使用任何软件的情况下创建 Windows 10 可启动 USB 驱动器，Windows 命令提示符可以为您完成。以下是如何使用命令提示符从 ISO 映像创建 Windows 10 可启动 USB 闪存驱动器。
1.将U盘连接到电脑，并将U盘上的数据（如果有）备份到其他地方。
2.在 Windows 搜索框中键入 cmd。当命令提示符应用程序快捷方式出现在搜索结果中时，单击以管理员身份运行。
3.在命令提示符窗口中，输入 diskpart 并按 Enter 键以访问 diskpart 工具。
4. Type list disk and press Enter to list all disks connected to your computer. Then judge which is your USB flash drive according to the disk size.
5. Type select disk # and press Enter to select your USB flash drive. "#" is the disk number of your USB flash drive.
6. Type clean and press Enter to erase all partitions as well as data on your USB flash drive.
7. Type convert mbr and press Enter to convert the USB flash drive to MBR format.
8. Type create partition primary and press Enter to create a primary partition on the USB flash drive.
9. Type active and press Enter to active the primary partition on the USB flash drive.
10. Type format quick fs=fat32 label="SWM-USB" and press Enter to quickly format the primary partition as FAT32 and set its volume label as SWM-USB.
11. Type assign letter="X" and press Enter to set the drive letter of the partition to X.
12. Type list volume and press Enter to list all volumes on your PC so that you can view the volume details of your USB drive.
13. Type exit and press Enter to exit the diskpart tool, leave the Command Prompt window there or close it.
1. Locate the downloaded Windows 10 ISO file and double-click it to mount it to your computer.
2. Windows will automatically assign a DVD drive letter for the mounted ISO image. Write down the DVD drive letter (E: in my case).
3. Go back to the previously Command Prompt window or open a new Command Prompt window as administrator. Then, type robocopy E: X: /E /xf install.wim and press Enter to copy all files except the install.wim file in the mounted Windows 10 ISO image to the root directory of the USB flash drive. Then, wait for the file copy to complete. This takes about three minutes.
4. All files except the install.wim file in the ISO image have been successfully copied to the root directly of the USB flash drive.
5. In this step, you will copy the install.wim file from the ISO image to the USB flash drive. Since the install.wim file is larger than 4GB and the FAT32 formatted USB drive cannot store a single file over 4GB, you need to divide the install.wim file into two install.swm files and save them on the USB flash drive. To do that, type the following dism command and press Enter.
Dism /Split-Image /ImageFile:E:sourcesinstall.wim /SWMFile:X:sourcesinstall.swm /FileSize:2500
6. A few minutes later, the install.swm files are successfully split from the install.wim file and stored in the sources folder in the USB flash drive.
7. Now go to the USB flash drive, open the sources folder, and you will see two install.swm image files.
That's all the steps required to create a Windows 10 bootable USB flash drive from an ISO image using Command Prompt. Then, boot the computer from the USB flash drive and you can install Windows 10 on the computer.
The above how to create a Windows 10 bootable USB drive from an ISO image file for installing Windows 10. Both Rufus and iSumsoft ShapeISO are good options, they are safe, effective and easy to use. The Command Prompt allows you to successfully create a Windows 10 bootable USB drive from an ISO image without using any software, but the process is cumbersome. You need to make sure you run the correct commands to make the USB drive bootable. If you are not good at using Windows commands, Rufus or iSumsoft ShapeISO is still your best choice.
You may also be interested in How to Make External Hard Drive Bootable for Windows 10.
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