Detect GPT and MBR partitions with Powershell

Question

Is there a way to tell if a disk has a GPT or an MBR partition with powershell?

Answer 1

Using WMI

Get-WmiObject -Query "Select * from Win32_DiskPartition WHERE Index = 0" |
  Select-Object DiskIndex, @{
    Name = "GPT";
    Expression = {$_.Type.StartsWith("GPT")}
  }

Using Diskpart

$a = "list disk" | diskpart

$m = [String]::Join("`n", $a) |
  Select-String -Pattern "Disk (\d+).{43}(.)" -AllMatches

$m.Matches |
  Select-Object @{
    Name = "DiskIndex";
    Expression = {$_.Groups[1].Value}}, @{
    Name = "GPT";
    Expression = {$_.Groups[2].Value -eq "*"}
  }