How to find Harddisk SerialNumber

How to find Harddisk SerialNumber ?

### Computer Unique No or hard drive serialNumber From Visual Basic

Private Declare Function GetVolumeInformation _
Lib "kernel32.dll" _
Alias "GetVolumeInformationA" _
(ByVal lpRootPathName As String, _
ByVal lpVolumeNameBuffer As String, _
ByVal nVolumeNameSize As Integer, _
lpVolumeSerialNumber As Long, _
lpMaximumComponentLength As Long, _
lpFileSystemFlags As Long, _
ByVal lpFileSystemNameBuffer As String, _
ByVal nFileSystemNameSize As Long) As Long

############ This Function will return SerialNumber of a Drive

Public Function GetSerialNumber(DriveLetter As String) As String

Dim SerialNum As Long
Dim VolNameBuf As String
Dim FileSysNameBuf As String

Select Case Len(DriveLetter)
Case 1
If DriveLetter Like "[a-z]" Then
DriveLetter = Left$(DriveLetter, 1) & ":\"
Else
GetSerialNumber = "Error - Bad drive designation"
End If
Case 2
If LCase(DriveLetter) Like "[a-z]:" Then
DriveLetter = DriveLetter & "\"
Else
GetSerialNumber = "Error - Bad drive designation"
End If
Case 3
If LCase(DriveLetter) Like "[!a-z]:\" Then
GetSerialNumber = "Error - Bad drive designation"
End If
Case Else
GetSerialNumber = "Error - Bad drive designation"
End Select

If Len(GetSerialNumber) = 0 Then
VolNameBuf = String$(255, Chr$(0))
FileSysNameBuf = String$(255, Chr$(0))
GetVolumeInformation DriveLetter, VolNameBuf, _
Len(VolNameBuf), SerialNum, 0, 0, _
FileSysNameBuf, Len(FileSysNameBuf)
GetSerialNumber = Right$("00000000" & Hex$(SerialNum), 8)
End If
End Function