powershell判读Windows操作系统版本

$regPath = "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion"

try {
    # 一次性读取注册表，避免重复访问
    $cv = Get-ItemProperty -Path $regPath -ErrorAction Stop
} catch {
    throw "无法读取 Windows 版本信息：$($_.Exception.Message)"
}

$installationType = [string]$cv.InstallationType
$buildNumber = [int]$cv.CurrentBuildNumber

if ($null -ne $cv.UBR) {
    $ubr = [int]$cv.UBR
} else {
    $ubr = 0
}

$displayVersion = [string]$cv.DisplayVersion
$productName = [string]$cv.ProductName

if ([Environment]::Is64BitOperatingSystem) {
    $osArchitecture = "64-bit"
} else {
    $osArchitecture = "32-bit"
}

# 精细内部版本，例如 26200.8246
$osBuild = "{0}.{1}" -f $buildNumber, $ubr

if ($null -ne $cv.CurrentMajorVersionNumber) {
    $majorVersion = [int]$cv.CurrentMajorVersionNumber
} else {
    $majorVersion = 10
}

if ($null -ne $cv.CurrentMinorVersionNumber) {
    $minorVersion = [int]$cv.CurrentMinorVersionNumber
} else {
    $minorVersion = 0
}

# 完整版本，例如 10.0.26200.8246
$fullVersion = "{0}.{1}.{2}.{3}" -f `
    $majorVersion, `
    $minorVersion, `
    $buildNumber, `
    $ubr

if ($installationType -eq "Client") {
    if ($buildNumber -ge 22000) {
        $osVersion = "Windows 11"

        # 某些 Windows 11 会兼容性保留 Windows 10 ProductName
        if ($productName -match "\bWindows 10\b") {
            $productName = $productName -replace `
                "\bWindows 10\b", `
                "Windows 11"
        } elseif ($productName -notmatch "\bWindows 11\b") {
            $productName = "Windows 11"
        }
    } elseif ($buildNumber -ge 10240) {
        $osVersion = "Windows 10"
    } else {
        $osVersion = "未知客户端版本"
    }
} elseif ($installationType -like "Server*") {
    if ($buildNumber -ge 26100) {
        $osVersion = "Windows Server 2025"
    } elseif ($buildNumber -ge 20348) {
        $osVersion = "Windows Server 2022"
    } elseif ($buildNumber -ge 17763) {
        $osVersion = "Windows Server 2019"
    } elseif ($buildNumber -ge 14393) {
        $osVersion = "Windows Server 2016"
    } else {
        $osVersion = "Windows Server"
    }
} else {
    $osVersion = "未知版本"
}

[pscustomobject][ordered]@{
    OSType             = $installationType
    OSVersion          = $osVersion
    DisplayVersion     = $displayVersion
    CurrentBuildNumber = $buildNumber
    UBR                = $ubr
    OSBuild            = $osBuild
    FullVersion        = $fullVersion
    ProductName        = $productName
    OSArchitecture     = $osArchitecture
} | Format-List

}
elseif ($installationType -eq "Server") {

}elseif ($installationType -eq "Server") {

}
else {

}else {