Disk information script

This chapter explains different methodologies for scanning the different aspects of the logical drives attached to your system. If you want to query the disks on a system, convert the disk size and free space, and identify the drive types, you can create the following script:

function measure-diskunit { param($diskspace)
    switch ($diskspace) {
      {$_ -gt 1PB} { return [System.Math]::Round(($_ / 1PB),2),"PB" }
      {$_ -gt 1TB} { return [System.Math]::Round(($_ / 1TB),2),"TB" }
      {$_ -gt 1GB} { return [System.Math]::Round(($_ / 1GB),2),"GB" }
      {$_ -gt 1MB} { return [System.Math]::Round(($_ / 1MB),2),"MB" }
      {$_ -gt 1KB} { return [System.Math]::Round(($_ / 1KB),2),"KB" }
      default { return [System.Math]::Round(($_ / 1MB),2),"MB" }
    }
}

$disks = get-wmiobject win32_logicaldisk
Foreach ($disk in $disks) {
    $driveletter = $disk.DeviceID
    $freespace = $disk.FreeSpace
    $size = $disk.Size

    if ($freespace -lt 1) { $freespace = "0"...