This script is meant to run in Windows PE and requires the following PE packages: StorageWmi, Powershell, and .NET

RecoveryWipe.ps1

if ((Get-Disk).NumberOfPartitions -eq 4)
{
    [System.IO.DriveInfo]::GetDrives() | `
    ? { (($_.DriveType -eq 'Fixed') -and ($_.VolumeLabel -eq 'RECOVERY')) } | `
    % {
        Write-Host ('{0}util' -f $_.RootDirectory)
        if (test-path ('{0}MININT' -f $_.RootDirectory)) { Remove-Item ('{0}MININT' -f $_.RootDirectory) -Force -Recurse }
        if (test-path ('{0}_SMSTaskSequence' -f $_.RootDirectory)) { Remove-Item ('{0}_SMSTaskSequence' -f $_.RootDirectory) -Force -Recurse }
        if (test-path ('{0}util' -f $_.RootDirectory)) { Remove-Item ('{0}util' -f $_.RootDirectory) -Force -Recurse }
    }
} else {
    Initialize-Disk 0
    Clear-Disk 0 -RemoveData -Confirm:$false | out-null
}