# 设定虚拟机操作系统类型与版本

您可以更改虚拟机配置使用的访客操作系统。在以下情况下，您需要进行更改：

* 如果您升级访客操作系统（例如，从 Windows 10 升级到 Windows 11），则需要相应地更改访客操作系统类型和版本，否则 [Parallels Tools](/pdfm-20-ug-zh_cn/parallels-desktop-for-mac-20-yong-hu-zhi-nan/gao-ji-zhu-ti/an-zhuang-huo-geng-xin-parallels-tools.md) 可能无法正常运行。
* 如果您创建了虚拟机，但没有安装操作系统，然后决定通过其他操作系统使用此虚拟机，而不是最初指定的操作系统。

要设置访客操作系统类型和版本，请执行以下操作：

1. [关闭虚拟机](/pdfm-20-ug-zh_cn/parallels-desktop-for-mac-20-yong-hu-zhi-nan/zai-mac-shang-shi-yong-windows/ru-men/guan-bi-huo-zhong-zhi-windows.md)。
2. 打开**操作**菜单并选定**配置**。
3. 单击**通用**，然后在**名称**字段正上方的菜单中选择一个操作系统。


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