Powershell: Windows EC2 - find and format an ephemeral NVMe drive if not already active

formatephemeral.ps1

#This script will identify a single ephemeral disk presented to windows and format it w/64k blocksize and TEMPORARY label.
#Created by DTH 5/4/20

#Identify disk with Friendly Name indicating Ephemeral
$disknum = get-disk |where-object {$_.FriendlyName -eq 'NVMe Amazon EC2 NVMe'}| select-object -ExpandProperty Number

#Check to make sure disk is RAW, if so format / label
$operationalstatus = get-disk $disknum | Select-Object -ExpandProperty OperationalStatus
$partitionstyle = get-disk $disknum | Select-Object -ExpandProperty PartitionStyle
if ( $partitionstyle -eq 'RAW' ) {
    Initialize-Disk -Number $disknum
    new-partition -DiskNumber $disknum -UseMaximumSize -DriveLetter T | Format-Volume -FileSystem NTFS -NewFilesystemLabel TEMPORARY -AllocationUnitSize 65536 –Force -Confirm:$false
}
else { write-output "no RAW ephemeral disks found" }