and here are the results from my Azure VM. (See My previous posts on how to create your own Azure VMs with PowerShell)

#############################################################################
#
# NAME: Show-DriveSizes.ps1
# AUTHOR: Rob Sewell http://sqldbawiththebeard.com
# DATE:22/07/2013
#
# COMMENTS: Load function for displaying drivesizes
# USAGE: Show-DriveSizes server1
###########################################


Function Show-DriveSizes ([string]$Server) {
    $Date = Get-Date
    Write-Host -foregroundcolor DarkBlue -backgroundcolor yellow "$Server -     - $Date"
    #interogate wmi service and return disk information
    $disks = Get-WmiObject -Class Win32_logicaldisk -Filter "Drivetype=3"     -ComputerName $Server
    $diskData = $disks | Select DeviceID, VolumeName , 
    # select size in Gbs as int and label it SizeGb
    @{Name = "SizeGB"; Expression = {$_.size / 1GB -as [int]}},
    # select freespace in Gbs  and label it FreeGb and two deciaml places
    @{Name = "FreeGB"; Expression = {"{0:N2}" -f ($_.Freespace / 1GB)}},
    # select freespace as percentage two deciaml places  and label it     PercentFree 
    @{Name = "PercentFree"; Expression = {"{0:P2}" -f ($_.Freespace / $_.    Size)}}
    $diskdata 
                                                  
}