Автор: Alex Konshin
WEB-сайт: http://delphibase.endimus.com

{ **** UBPFD *********** by delphibase.endimus.com ****
>> Поличение серийного номера IDE диска.

Функция получает серийный номер первого физического диска IDE (не серийный номер тома!).
Используется S.M.A.R.T. API, а под Windows NT/2K/XP запрос производится не напрямую к диску,
а через miniport драйвер контроллера, что позволяет читать серийный номер не имея прав администратора.
Функция может не работать, если первый контролер в системе не ATA или если первое устройство
не является винчестером, который поддерживает SMART (современные винчестеры поддерживают).
Если Вы хотите получить другие параметры диска/других дисков, то смотрите пример IdeInfo2 с моего сайта.
На Windows 9x требует наличия драйвера smartvsd.vxd (должен быть в стандартной поставке),
просто скопируйте его в \windows\system\iosubsys и перезагрузите компьютер.

Зависимости: Windows, SysUtils
Автор:       Alex Konshin, akonshin@earthlink.net, Boston, USA
Copyright:   http://home.earthlink.net/~akonshin/index.htm
Дата:        30 декабря 2002 г.
***************************************************** }

function GetIdeDiskSerialNumber: string;
type
  TSrbIoControl = packed record
    HeaderLength: ULONG;
    Signature: array[0..7] of Char;
    Timeout: ULONG;
    ControlCode: ULONG;
    ReturnCode: ULONG;
    Length: ULONG;
  end;
  SRB_IO_CONTROL = TSrbIoControl;
  PSrbIoControl = ^TSrbIoControl;

  TIDERegs = packed record
    bFeaturesReg: Byte; // Used for specifying SMART "commands".
    bSectorCountReg: Byte; // IDE sector count register
    bSectorNumberReg: Byte; // IDE sector number register
    bCylLowReg: Byte; // IDE low order cylinder value
    bCylHighReg: Byte; // IDE high order cylinder value
    bDriveHeadReg: Byte; // IDE drive/head register
    bCommandReg: Byte; // Actual IDE command.
    bReserved: Byte; // reserved for future use. Must be zero.
  end;
  IDEREGS = TIDERegs;
  PIDERegs = ^TIDERegs;

  TSendCmdInParams = packed record
    cBufferSize: DWORD; // Buffer size in bytes
    irDriveRegs: TIDERegs; // Structure with drive register values.
    bDriveNumber: Byte; // Physical drive number to send command to (0,1,2,3).
    bReserved: array[0..2] of Byte; // Reserved for future expansion.
    dwReserved: array[0..3] of DWORD; // For future use.
    bBuffer: array[0..0] of Byte; // Input buffer.
  end;
  SENDCMDINPARAMS = TSendCmdInParams;
  PSendCmdInParams = ^TSendCmdInParams;

  TIdSector = packed record
    wGenConfig: Word;
    wNumCyls: Word;
    wReserved: Word;
    wNumHeads: Word;
    wBytesPerTrack: Word;
    wBytesPerSector: Word;
    wSectorsPerTrack: Word;
    wVendorUnique: array[0..2] of Word;
    sSerialNumber: array[0..19] of Char;
    wBufferType: Word;
    wBufferSize: Word;
    wECCSize: Word;
    sFirmwareRev: array[0..7] of Char;
    sModelNumber: array[0..39] of Char;
    wMoreVendorUnique: Word;
    wDoubleWordIO: Word;
    wCapabilities: Word;
    wReserved1: Word;
    wPIOTiming: Word;
    wDMATiming: Word;
    wBS: Word;
    wNumCurrentCyls: Word;
    wNumCurrentHeads: Word;
    wNumCurrentSectorsPerTrack: Word;
    ulCurrentSectorCapacity: ULONG;
    wMultSectorStuff: Word;
    ulTotalAddressableSectors: ULONG;
    wSingleWordDMA: Word;
    wMultiWordDMA: Word;
    bReserved: array[0..127] of Byte;
  end;
  PIdSector = ^TIdSector;

const
  IDE_ID_FUNCTION = $EC;
  IDENTIFY_BUFFER_SIZE = 512;
  DFP_RECEIVE_DRIVE_DATA = $0007C088;
  IOCTL_SCSI_MINIPORT = $0004D008;
  IOCTL_SCSI_MINIPORT_IDENTIFY = $001B0501;
  DataSize = sizeof(TSendCmdInParams) - 1 + IDENTIFY_BUFFER_SIZE;
  BufferSize = SizeOf(SRB_IO_CONTROL) + DataSize;
  W9xBufferSize = IDENTIFY_BUFFER_SIZE + 16;
var
  hDevice: THandle;
  cbBytesReturned: DWORD;
  pInData: PSendCmdInParams;
  pOutData: Pointer; // PSendCmdInParams;
  Buffer: array[0..BufferSize - 1] of Byte;
  srbControl: TSrbIoControl absolute Buffer;

  procedure ChangeByteOrder(var Data; Size: Integer);
  var
    ptr: PChar;
    i: Integer;
    c: Char;
  begin
    ptr := @Data;
    for i := 0 to (Size shr 1) - 1 do
    begin
      c := ptr^;
      ptr^ := (ptr + 1)^;
      (ptr + 1)^ := c;
      Inc(ptr, 2);
    end;
  end;

begin
  Result := '';
  FillChar(Buffer, BufferSize, #0);
  if Win32Platform = VER_PLATFORM_WIN32_NT then
  begin // Windows NT, Windows 2000
    // Get SCSI port handle
    hDevice := CreateFile('\\.\Scsi0:', GENERIC_READ or GENERIC_WRITE,
      FILE_SHARE_READ or FILE_SHARE_WRITE, nil, OPEN_EXISTING, 0, 0);
    if hDevice = INVALID_HANDLE_VALUE then
      Exit;
    try
      srbControl.HeaderLength := SizeOf(SRB_IO_CONTROL);
      System.Move('SCSIDISK', srbControl.Signature, 8);
      srbControl.Timeout := 2;
      srbControl.Length := DataSize;
      srbControl.ControlCode := IOCTL_SCSI_MINIPORT_IDENTIFY;
      pInData := PSendCmdInParams(PChar(@Buffer) + SizeOf(SRB_IO_CONTROL));
      pOutData := pInData;
      with pInData^ do
      begin
        cBufferSize := IDENTIFY_BUFFER_SIZE;
        bDriveNumber := 0;
        with irDriveRegs do
        begin
          bFeaturesReg := 0;
          bSectorCountReg := 1;
          bSectorNumberReg := 1;
          bCylLowReg := 0;
          bCylHighReg := 0;
          bDriveHeadReg := $A0;
          bCommandReg := IDE_ID_FUNCTION;
        end;
      end;
      if not DeviceIoControl(hDevice, IOCTL_SCSI_MINIPORT, @Buffer,
        BufferSize, @Buffer, BufferSize, cbBytesReturned, nil) then
        Exit;
    finally
      CloseHandle(hDevice);
    end;
  end
  else
  begin // Windows 95 OSR2, Windows 98
    hDevice := CreateFile('\\.\SMARTVSD', 0, 0, nil, CREATE_NEW, 0, 0);
    if hDevice = INVALID_HANDLE_VALUE then
      Exit;
    try
      pInData := PSendCmdInParams(@Buffer);
      pOutData := PChar(@pInData^.bBuffer);
      with pInData^ do
      begin
        cBufferSize := IDENTIFY_BUFFER_SIZE;
        bDriveNumber := 0;
        with irDriveRegs do
        begin
          bFeaturesReg := 0;
          bSectorCountReg := 1;
          bSectorNumberReg := 1;
          bCylLowReg := 0;
          bCylHighReg := 0;
          bDriveHeadReg := $A0;
          bCommandReg := IDE_ID_FUNCTION;
        end;
      end;
      if not DeviceIoControl(hDevice, DFP_RECEIVE_DRIVE_DATA, pInData,
        SizeOf(TSendCmdInParams) - 1, pOutData, W9xBufferSize,
        cbBytesReturned, nil) then
        Exit;
    finally
      CloseHandle(hDevice);
    end;
  end;
  with PIdSector(PChar(pOutData) + 16)^ do
  begin
    ChangeByteOrder(sSerialNumber, SizeOf(sSerialNumber));
    SetString(Result, sSerialNumber, SizeOf(sSerialNumber));
  end;
end;

Пример использования:

var
  s: string;
  rc: DWORD;
begin
  s := GetIdeDiskSerialNumber;
  if s = '' then
  begin
    rc := GetLastError;
    if rc = 0 then
      WriteLn('IDE drive is not support SMART feature')
    else
      WriteLn(SysErrorMessage(rc));
  end
  else
    WriteLn('Disk serial number: ''', s, '''');
end.