'references'a system.Management'i ekleyiniz
Imports System.Management
Dim disk As New ManagementClass("Win32_PhysicalMedia")
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
For Each Hdisk As ManagementObject In disk.GetInstances()
If Hdisk("SerialNumber") <> Nothing Then
MessageBox.Show("Hdisk serino: " & CStr(Hdisk("SerialNumber")))
End If
Next Hdisk
End Sub