How to automatically clean your disk at the start of your task sequence

As you may know cleaning an encrypted disk is often required before starting an image via ConfigMgr.  This presents problems in that the disk is not accessible for a package to be stored upon it and often means we have to manually run diskpart to clean the disk.
I wasn't happy with this and with the current 8.1 deployment I am working I thought there must be a way around it....

So I came up with the following powershell 1 liner to handle this issue:

Powershell.exe Get-Disk | % {Clear-Disk -Number $_.Number -RemoveData -RemoveOEM -Confirm:$False}

Shown below in the screenshot

The only downside with this is that you have to add the following optional components to your boot images so they will become around 100mb larger:

WinPE-StorageWMI
WinPE-NetFx
WinPE-PowerShell

Cheers
Wayne

*Please be aware, this will clean ALL disks in the machine*