plugins/28-disk.ps1

[CmdletBinding()]
param(
    $Config
)

Write-Verbose 'Extending existing volumes'
'rescan' | diskpart
(Get-CimInstance -Class Win32_Volume -Property Name -Verbose:$false).Name -match ':' | % {
    "select volume $_",'extend' | diskpart
}

# config source here! check plugin execution order
Write-Verbose 'Changing drive letter for CDROM'
'select volume 0','assign letter=Z' | diskpart

Write-Verbose 'Formatting and mounting additional disks'
$DiskProperties = 'Index','SerialNumber','Partitions','SCSIPort','SCSILogicalUnit'
$DiskDrives = Get-CimInstance -Class Win32_DiskDrive -Property $DiskProperties -Verbose:$false
$LogicalDisks = Get-CimInstance Win32_LogicalDisk -Property DeviceID -Verbose:$false
$i = 0
$UnassignedLetters = [char[]](68..90) | ? { $_ -notin $LogicalDisks.DeviceID.TrimEnd(':') }
foreach ($HDD in $Config.HDD) {
    $Port, $Lun = $HDD.DeviceNode -replace 'scsi' -split ':'
    $HardDisk = $DiskDrives |
    ? { ($_.SerialNumber -and $_.SerialNumber -eq $HDD.Uuid) -or ($_.SCSIPort -eq $Port -and $_.SCSILogicalUnit -eq $Lun)}
    $Index = $HardDisk.Index
    if (-not $HardDisk.Partitions) {
        $MountPoint = if ($HDD.MountPoint) { $HDD.MountPoint } else { $UnassignedLetters[$i] + ':'; $i++ }
        $Label = if ($HDD.Label) { $HDD.Label } else { 'Data' }
        $ClusterSizeKB = if ($HDD.ClusterSizeKB) { "$($HDD.ClusterSizeKB)K" } else { '4K' }
        mkdir $MountPoint -ea SilentlyContinue
        Write-Verbose "Index: $Index, MountPoint: $MountPoint, Label: $Label, Cluster Size: $ClusterSizeKB"
        "select disk $Index",
        'attributes disk clear readonly',
        'online disk',
        'convert gpt',
        'create partition primary',
        "format label='$Label' fs=ntfs unit=$ClusterSizeKB quick",
        "assign mount='$MountPoint'" | diskpart
    } else {
        # disks are offline after sysprep ('SAN POLICY=OnlineAll')
        "select disk $Index",
        'online disk' | diskpart
    }
}