英語 OS に日本語の言語パックをインストール

Install-JapaneseLanguagePack.ps1

function Install-JapaneseLanguagePack
{
    Param(
        [parameter(mandatory=$true)]
        $AdminUser = "",
        [parameter(mandatory=$true)]
        $AdminPassword = "",
        [parameter(mandatory=$true)]
        [ValidateSet("2012" , "2012R2", "2016")]
        $OSVersion = ""
    )
    try{
        $wintemp = "C:\Windows\Temp"
        $RunOncePath = "registry::\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce"
        $AutoLogonPath = "registry::\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon"
 
        # 
        $lpuri = switch($OSVersion)
        {
            "2012"    {"http://fg.v4.download.windowsupdate.com/msdownload/update/software/updt/2012/10/windowsserver2012-kb2607607-x64-jpn_d079f61ac6b2bab923f14cd47c68c4af0835537f.cab"}
            "2012R2"  {"http://fg.v4.download.windowsupdate.com/d/msdownload/update/software/updt/2013/09/lp_3d6c75e45f3247f9f94721ea8fa1283392d36ea2.cab"}
            "2016"    {"http://fg.v4.download.windowsupdate.com/c/msdownload/update/software/updt/2016/09/lp_9a666295ebc1052c4c5ffbfa18368dfddebcd69a.cab"}
            default{return}
        }

        Set-WinUserLanguageList ja-jp,en-US -Force

        Invoke-WebRequest -Uri $lpuri -OutFile (Join-Path -Path $wintemp -ChildPath "lp.cab")
        Add-WindowsPackage -Online -PackagePath (Join-Path -Path $wintemp -ChildPath "lp.cab")
        Remove-Item (Join-Path -Path $wintemp -ChildPath "lp.cab")
    
        $runonce = 
@"
Set-WinUILanguageOverride ja-JP
Set-WinSystemLocale 1041
Set-WinHomeLocation 0x7A
tzutil /s "Tokyo Standard Time"
Set-ItemProperty -Path "$AutoLogonPath" -Name "AutoAdminLogon" -Value "0"
Remove-ItemProperty -Path "$AutoLogonPath" -Name "DefaultUserName"
Remove-ItemProperty -Path "$AutoLogonPath" -Name "DefaultPassword"
Remove-Item $(Join-Path -Path $wintemp -ChildPath "SetupLang.ps1")

Start-Sleep -Seconds 20
Restart-Computer -Force
"@ | Out-File -FilePath (Join-Path -Path $wintemp -ChildPath "SetupLang.ps1") -Encoding ascii

        Set-ItemProperty -Path $RunOncePath -Name "SetupLang" -Value "powershell.exe -ExecutionPolicy RemoteSigned -file $(Join-Path -Path $wintemp -ChildPath 'SetupLang.ps1')"
        Set-ItemProperty -Path $AutoLogonPath -Name "AutoAdminLogon" -Value "1"
        Set-ItemProperty -Path $AutoLogonPath -Name "DefaultUserName" -Value $AdminUser
        Set-ItemProperty -Path $AutoLogonPath -Name "DefaultPassword" -Value $adminpassword

        Restart-Computer -Force
    }catch [Exception]{
        "{0}`n{1}" -f $Error[0].ScriptStackTrace, $Error[0].Exception | Set-Content -Path (Join-Path -Path $wintemp -ChildPath "error.log")
        $Error[0] | fl -Force
    }
}

Install-JapaneseLanguagePack -AdminUser "Administrator" -AdminPassword "<パスワード>" -OSVersion 2016