我想将一些VHDX文件转换为VHD，以便将它们上传到Microsoft Azure，因为我必须为一家公司将一些服务器迁移到云。问题是，我的服务器似乎不知道PowerShell中的VHD命令。

Get-VHD : The term 'Get-VHD' is not recognized as the name of a cmdlet, function, script file, or operable program.
Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1
+ Get-VHD -Path * | %{Convert-VHD -Path $_.Path -DestinationPath ($_.Pa ...
+ ~~~~~~~
    + CategoryInfo          : ObjectNotFound: (Get-VHD:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException

和

Convert-VHD -Path ".\VHDName.vhdx" -DestinationPath ".\VHDName.vhd"

Convert-VHD : The term 'Convert-VHD' is not recognized as the name of a cmdlet, function, script file, or operable
    program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
    At line:1 char:1
    + Convert-VHD -Path ".\Windows 8.1 x86 Update1 UpdatePack Upgrade.vhdx" ...
    + ~~~~~~~~~~~
        + CategoryInfo          : ObjectNotFound: (Convert-VHD:String) [], CommandNotFoundException
        + FullyQualifiedErrorId : CommandNotFoundException

有人知道如何解决这个问题吗？Hyper-V无法安装，VirtualBox也无法安装。服务器本身是一个托管在Azure上的Windows 10 Technical Preview 3虚拟机。Powershell的版本是5.0.10514.0。