Saber tamaño carpetas pc

<#

.SYNOPSIS

   Analizador de Espacio en Disco

.DESCRIPTION

   Muestra el espacio usado por cada carpeta en un directorio

#>

param(

    [string]$targetFolder = "C:\"

)

Get-ChildItem $targetFolder -ErrorAction SilentlyContinue | Where-Object { $_.PSIsContainer } | ForEach-Object {

    try {

        $size = (Get-ChildItem $_.FullName -Recurse -ErrorAction SilentlyContinue | 

               Measure-Object -Property Length -Sum -ErrorAction SilentlyContinue).Sum / 1MB

        if ($size -ge 0) {

            Write-Host "$($_.Name) - $($size.ToString('N2')) MB"

        }

    } catch {

        Write-Host "$($_.Name) - [Acceso denegado]" -ForegroundColor Red

    }

}