Quick and dirty view

space.ps1

function space($pc)
{
    Get-WmiObject Win32_LogicalDisk -ComputerName $pc |
    Where-Object {$_.DriveType -eq 3} |
    Select-Object DeviceID, VolumeName, `
        @{n="Size"; e={[math]::round($_.Size / 1GB, 1)}}, `
        @{n="FreeSpace"; e={[math]::round($_.FreeSpace / 1GB, 1)}}, `
        @{n="PercentFree"; e={[math]::round($_.FreeSpace / $_.Size * 100.0, 1)}} |
    Format-Table
}