Disk Space Check in Powershell - powershell

Question

I am currently checking disk space size using power shell but was wondering how I can amend the below to add a percentage of space left?
Format-Table DeviceId, MediaType, #{n="Size";e={[math]::Round($_.Size/1MB,2)}},#{n="FreeSpace";e={[math]::Round($_.FreeSpace/1MB,2)}}
I have tried to do it by changing the math but no luck.
gwmi win32_logicaldisk -Computername PCNAME| Format-Table DeviceId, MediaType, #{n="Size";e={[math]::Round($_.Size/1MB,2)}},#{n="FreeSpace" (%);e={[math]::Round($_.FreeSpace/$_.Size*100,2)}}|Out-File c:\PMC\Disk\OutPut\Newcastle.txt
This just returns an error.

Answer 1

Here is an example how to do it:
gwmi Win32_LogicalDisk -Filter "DeviceID='C:'" | select Name, FileSystem,FreeSpace,BlockSize,Size | % {$_.BlockSize=(($_.FreeSpace)/($_.Size))*100;$_.FreeSpace=($_.FreeSpace/1GB);$_.Size=($_.Size/1GB);$_}| Format-Table Name, #{n='FS';e={$_.FileSystem}},#{n='Free, Gb';e={'{0:N2}'-f
$_.FreeSpace}}, #{n='Free,%';e={'{0:N2}'-f $_.BlockSize}} -AutoSize
output:
Name FS Free, Gb Free,%
---- -- -------- ------
C: NTFS 593.59 31.88

Answer 2

Here's part of a script I have written that may help you:
If (Test-Path 'C:')
{
$CDisk = GWMI Win32_LogicalDisk -Filter "DeviceID='C:'"
$CDisk = #{'Size' = [Math]::Round($CDisk.Size / 1GB);
'FreeSpace' = [Math]::Round($CDisk.FreeSpace / 1GB)}
$CDisk.Add('Usage', ($CDisk.Size - $CDisk.FreeSpace))
$CDisk.Add('PercentUsage', [Math]::Round(($CDisk.Usage / $CDisk.Size) * 100))
"C: drive free space: $($CDisk.FreeSpace)GB"
"C: drive capacity: $($CDisk.Size)GB"
'--------------------------------'
"Disk usage: $($CDisk.Usage)GB ($($CDisk.PercentUsage)%)"
}