$ServerName = 'SEVERNAME' -- ##Replace the server name here
Get-WmiObject -Class Win32_LogicalDisk -Filter "DriveType=3" -ComputerName $ServerName |
Select-Object -Property @{n='DriveLetter';e={$PSItem.DeviceID}},
@{n='FreeSpace(GB)';e={"{0:N1}" -f ($PSItem.FreeSpace / 1GB)}},
@{n='TotalSize(GB)';e={"{0:N1}" -f ($PSItem.Size / 1GB)}},
@{n='FreeSpace%';e={"{0:N1}%" -f ($PSItem.FreeSpace / $PSItem.Size * 100)}} |
ft -AutoSize