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用API 函数GetVolumeInformation得到的不是硬盘的序列号！！！
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BOOL GetVolumeInformation(
LPCTSTR lpRootPathName,
LPTSTR lpVolumeNameBuffer,
DWORD nVolumeNameSize,
LPDWORD lpVolumeSerialNumber,
LPDWORD lpMaximumComponentLength,
LPDWORD lpFileSystemFlags,
LPTSTR lpFileSystemNameBuffer,
DWORD nFileSystemNameSize
);
看看英文啊：VolumeSerialNumber!得到的只是卷区序列号！
硬盘的序列号应该是
Drive Model Number________________: WDC WD400EB-00CPF0
Drive Serial Number_______________: WD-WCAATF083586
Drive Controller Revision Number__: 06.04G06
Controller Buffer Size on Drive___: 2097152 bytes
Drive Type________________________: Fixed
Drive Size________________________: 40020664320 bytes
中：
Drive Serial Number_______________: WD-WCAATF083586 这才是硬盘Serial Number！！！！
这个号是不会因为你格式化硬盘而改动，也不是网上流传的修改工具能改的，（其实网上流传的修改工具的也不过是卷区号而已！）
建议用 DiskID.dll或DiskID32.dll来获取
用diskid.dll和disk32.dll获得硬盘序列号
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可从下载
diskid32.dll可从下载
Private Function 硬盘序列号() As String
Try
Dim myInfo As Microsoft.Win32.RegistryKey = My.Computer.Registry.LocalMachine.OpenSubKey("HARDWARE\DEVICEMAP\Scsi\Scsi Port 0\Scsi Bus 1\Target Id 0\Logical Unit Id 0")
硬盘序列号 = Trim(myInfo.GetValue("SerialNumber"))
Catch
Try
Dim myInfo As Microsoft.Win32.RegistryKey = My.Computer.Registry.LocalMachine.OpenSubKey("HARDWARE\DEVICEMAP\Scsi\Scsi Port 1\Scsi Bus 1\Target Id 0\Logical Unit Id 0")
硬盘序列号 = Trim(myInfo.GetValue("SerialNumber"))
Catch
硬盘序列号 = ""
End Try
End Try
End Function
只在我的电脑上试过，你试下
strResult += 磁盘类型: System.Convert.ToInt16(disk(DriveType).ToString())End IfMsgBox(strResult)NextEnd Sub总结：在VB.NET中，用API函数可以获取硬盘信息。原来熟悉API函数VB6程序员，可以对API函数声明进行适当的更改后，进行调用。利用FSO（文件系统对象）的Scrrun.DLL，也可以获得磁盘信息。在.net Framwork中，利用WMI可以获取更多的关于机器硬件的详细信息（参考System.Management命名空间）。
Private Function 硬盘序列号() As String
Try
Dim myInfo As Microsoft.Win32.RegistryKey = My.Computer.Registry.LocalMachine.OpenSubKey("HARDWARE\DEVICEMAP\Scsi\Scsi Port 0\Scsi Bus 1\Target Id 0\Logical Unit Id 0")
硬盘序列号 = Trim(myInfo.GetValue("SerialNumber"))
Catch
Try
Dim myInfo As Microsoft.Win32.RegistryKey = My.Computer.Registry.LocalMachine.OpenSubKey("HARDWARE\DEVICEMAP\Scsi\Scsi Port 1\Scsi Bus 1\Target Id 0\Logical Unit Id 0")
硬盘序列号 = Trim(myInfo.GetValue("SerialNumber"))
Catch
硬盘序列号 = ""
End Try
End Try
End Function
试下，如果返回为空，则表示失败。
在本机win8win8.1有效，不过好像在有些机器上没用。