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1.调用diskid.dll实现：

  Option Explicit
  Private Declare Function IsWinNT Lib "DiskID.DLL" () As Long
  Private Declare Function ReadPhysicalDrive9X Lib "DiskID.DLL" (driveID As Long, buffer As Long, bufLen As Long) As Long
  Private Declare Function ReadPhysicalDriveInNT Lib "DiskID.DLL" (driveID As Long, buffer As Long, bufLen As Long) As Long

  Private Type DRIVER_INFO_OK
  ModalNumber(39) As Byte
  SerialNumber(19) As Byte
  ControlNum(7) As Byte
  DriveType As Long
  Cylinders As Long
  Heads As Long
  Sectors As Long
  End Type

  Private Sub Command1_Click()
  Dim x As DRIVER_INFO_OK
  Dim i As Long
  If IsWinNT = 1 Then
  i = ReadPhysicalDriveInNT(ByVal 0, ByVal VarPtr(x), ByVal 256)
  Else
  i = ReadPhysicalDrive9X(ByVal 0, ByVal VarPtr(x), ByVal 256)
  End If

 Dim s As String
  s = StrConv(x.ModalNumber, vbUnicode)
  s = Left(s, InStr(1, s, Chr(0)) - 1)
  MsgBox "硬件厂商代码为：" + s
  s = StrConv(x.SerialNumber, vbUnicode)
  s = Left(s, InStr(1, s, Chr(0)) - 1)
  MsgBox "硬盘序列号为：" + s
  End Sub

  2.调用diskid32.dll实现：

  Option Explicit
  Private Declare Function DiskID32 Lib "DiskID32.DLL" (ByRef DiskModel As Byte, ByRef DiskID As Byte) As Long

  Private Sub Command1_Click()
  Dim DiskModel(31) As Byte, DiskID(31) As Byte, i As Integer, Model As String, ID As String
  If DiskID32(DiskModel(0), DiskID(0)) <> 1 Then
  MsgBox "get diskid32 err"
  Exit Sub
  End If
  For i = 0 To 31
  If Chr(DiskModel(i)) <> Chr(0) Then
  Model = Model & Chr(DiskModel(i))
  End If
  If Chr(DiskID(i)) <> Chr(0) Then
  ID = ID & Chr(DiskID(i))
  End If
  Next
  MsgBox "硬件产生代码为：" + Model
  MsgBox "硬盘序列号为：" + ID

  End Sub

  说明：diskid.dll可从http://www.applevb.com/lib/diskio.rar下载，diskid32.dll可从

http://www.downez.com/down.asp?id=1149&no=1下载