如何为 Windows 安装 Linux 子系统

我在尝试在 Windows 10 机器上安装 Linux 子系统时遇到问题。

我正在按照在此 URL上找到的程序进行操作。我尝试启动以下命令（在 Powershell 中，以管理员身份），但收到一条错误消息：

dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart

Deployment Image Servicing and Management tool
Version: 10.0.16299.15

Image Version: 10.0.16299.1127


Error: 0x800f080c

Feature name VirtualMachinePlatform is unknown.
A Windows feature name was not recognized.
Use the /Get-Features option to find the name of the feature in the image and try the command again.

The DISM log file can be found at C:\WINDOWS\Logs\DISM\dism.log

我尝试使用该Get-Feature选项，但我不知道如何使其工作：

dism.exe /online /GET-feature /featurename:VirtualMachinePlatform
...
Error: 87

The get-feature option is unknown.

我的 DISM 日志文件如下所示（只有第一个错误行）：

2020-12-17 15:44:08, Error                 DISM   DISM Package Manager: PID=9820 TID=9400 Failed to get the Update through CBS. - CDISMPackage::Internal_OpenFeature(hr:0x800f080c)
2020-12-17 15:44:08, Error                 DISM   DISM Package Manager: PID=9820 TID=9400 Failed to get the underlying CBS Feature - CDISMPackage::OpenFeature(hr:0x800f080c)
2020-12-17 15:44:08, Error                 DISM   DISM Package Manager: PID=9820 Feature name VirtualMachinePlatform is unknown. - CPackageManagerCLIHandler::Private_GetFeaturesFromCommandLine(hr:0x800f080c)
2020-12-17 15:44:08, Error                 DISM   DISM Package Manager: PID=9820 TID=9400 Unknown features were specified on the command-line. - CPackageManagerCLIHandler::Private_GetFeaturesFromCommandLine(hr:0x800f080c)
2020-12-17 15:44:08, Error                 DISM   DISM Package Manager: PID=9820 TID=9400 Failed to get the Feature List from the command line. - CPackageManagerCLIHandler::Private_ProcessFeatureChange(hr:0x800f080c)
2020-12-17 15:44:08, Error                 DISM   DISM Package Manager: PID=9820 TID=9400 Failed while processing command enable-feature. - CPackageManagerCLIHandler::ExecuteCmdLine(hr:0x800f080c)

有人知道现在如何进行吗？
提前致谢