Windows Script - Check Unallocated free space right after Recovery Partition

 <#Created By - Abhishek Bansal

Use - Script that runs on Servers mentioned in Input.txt file, fetches details of Servers having Unallocated free space right after Recovery Partition.

Prerquistes - Copy entire code, save it in a file with .ps1 extension. On same location, create another file named "Input.txt" and mention all the servers against which this script will run.

Output - Two Output files, Output.csv containing details and Errorlogs.csv containing errors if any occued during execution of script.

#>

$servers = Get-Content .\Input.txt

$line = 0

$linecount = $servers.Count

$pct = 0

foreach($server in $servers)

{

$line = $line + 1

$pct = $line/$linecount*100

$Error.Clear()

Write-Progress -Activity "Checking $server" -Status "$line out of $linecount" -PercentComplete $pct

Write-Host -ForegroundColor Green "Exporting results for $server."

try{

$OSDisk = Invoke-Command -ComputerName $server -ErrorAction Stop -ScriptBlock{Get-Disk | ?{$_.bootfromdisk -eq $true}}

$partitions = Invoke-Command -ComputerName $server -ScriptBlock{Get-Partition -DiskNumber $using:OSDisk.Number | Sort-Object Offset} -ErrorAction Stop 

$recoverypartition =  $partitions | Where-Object {$_.Type -eq 'Recovery'} | Sort-Object Offset -Descending | Select-Object -First 1

    if ($recoverypartition) {

        $recoveryEnd = $($recoverypartition.Offset + $recoverypartition.Size)

        $lastoffset = $partitions | Select-Object -Last 1

       if($($recoveryEnd /1GB) -lt $($lastoffset.Offset /1GB))

       {

       $server | Select-Object -Property @{n="Hostname";e={$server}},@{n="Status";e={"Recovery Partition is not at the end of volume, hence skipping checks"}},@{n="Size (GB)";e={"NA"}} | Export-Csv ./Output.csv -NoTypeInformation -Append

       }

      else

      {

        if($($OSDisk.Size /1GB) -gt $($recoveryEnd /1GB))

        {

        $server | Select-Object -Property @{n="Hostname";e={$server}},@{n="Status";e={"Yes, Unallocated space exists."}},@{n="Size (GB)";e={$($OSDisk.Size /1GB - $($recoveryEnd /1GB))}}  | Export-Csv ./Output.csv -NoTypeInformation -Append

        }

        else

        {

        $server | Select-Object -Property @{n="Hostname";e={$server}},@{n="Status";e={"No, Unallocated space exists."}},@{n="Size (GB)";e={"NA"}} | Export-Csv ./Output.csv -NoTypeInformation -Append

        }

    }}

    else

    {

    $server | Select-Object -Property @{n="Hostname";e={$server}},@{n="Status";e={"No Recovery Partition exists."}},@{n="Size (GB)";e={"NA"}} | Export-Csv ./Output.csv -NoTypeInformation -Append

       }

}

catch{

$server | Select-Object -Property @{n="Hostname";e={$server}},@{n="Error";e={$Error.exception.Message}} | Export-Csv ./Errorlogs.csv -NoTypeInformation -Append

    }

}