$SystemInfo = [ordered]@{}

$MfgLookup = @{
    Crucial = 'Crucial Technology'
    WDC = 'Western Digital Corporation'
    }

$CIM_DiskDrive = @(Get-CimInstance -ClassName CIM_DiskDrive).
    Where({$_.Caption -notmatch 'Generic'}) |
    Sort-Object -Property Index

foreach ($CDD_Item in $CIM_DiskDrive)
    {
    $Index = '{0:D2}' -f $CDD_Item.Index
    $ModelPrefix = ($CDD_Item.Model.Split('_ '))[0]
    if (($CDD_Item.Manufacturer -eq '(Standard disk drives)') -and
        ($ModelPrefix -in $MfgLookup.Keys))
        {
        $Mfg = $MfgLookup[$ModelPrefix]
        }
        else
        {
        $Mfg = $Null
        }

    $SystemInfo.Add("Disk_${Index}_Manufacturer", $Mfg)
    $SystemInfo.Add("Disk_${Index}_Model", $CDD_Item.Model)
    $SystemInfo.Add("Disk_${Index}_SN", $CDD_Item.SerialNumber.Trim())
    $SystemInfo.Add("Disk_${Index}_FirmwareRevision", $CDD_Item.FirmwareRevision)
    # the raw number is in bytes
    $SystemInfo.Add("Disk_${Index}_Size_GB", $('{0:N3}' -f ($CDD_Item.Size / 1GB)))
    $SystemInfo.Add("Disk_${Index}_PartitionCount", $CDD_Item.Partitions)
    $SystemInfo.Add("Disk_${Index}_Status", $CDD_Item.Status)
    }

$SystemInfo