Some Storage cmdlets do not work in WinPE
At least Clear-Disk and New-Partition cmdlets from Storage module do not work in Windows PE. Nothing happens if you launch any of them, no any output/result. There may be more cmdlets not working in Windows PE.
There is a topic on TechNet https://social.technet.microsoft.com/Forums/windowsserver/en-US/3a0e7e9c-f1ea-4324-8a17-f4c447efcbb0/some-storage-cmdlets-do-not-work-under-winpe?forum=winserverpowershell