{
  for displaying the details of hard drives in

  06/11/2000  Lynn McGuire  written with many contributions from others,
                            IDE drives only under Windows NT/2K and 9X,
                            maybe SCSI drives later

  translated by Wyfinger 14/08/2007, wyfinger@mail.ru
}

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Button1: TButton;
    Label1: TLabel;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

type

//  GETVERSIONOUTPARAMS contains the data returned from the
//  Get Driver Version function.
GETVERSIONOUTPARAMS = record
   bVersion      : BYTE;  // Binary driver version.
   bRevision     : BYTE;  // Binary driver revision.
   bReserved     : BYTE;  // Not used.
   bIDEDeviceMap : BYTE;  // Bit map of IDE devices.
   fCapabilities : DWORD; // Bit mask of driver capabilities.
   dwReserved    : array[0..3] of DWORD; // For future use.
end;

PGETVERSIONOUTPARAMS = ^GETVERSIONOUTPARAMS;
LPGETVERSIONOUTPARAMS = ^GETVERSIONOUTPARAMS;

//  IDE registers
IDEREGS = 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;

PIDEREGS = ^IDEREGS;
LPIDEREGS = ^IDEREGS;

//  SENDCMDINPARAMS contains the input parameters for the
//  Send Command to Drive function.
SENDCMDINPARAMS = record
   cBufferSize  : DWORD;    //  Buffer size in bytes
   irDriveRegs  : IDEREGS; //  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;

PSENDCMDINPARAMS = ^SENDCMDINPARAMS;
LPSENDCMDINPARAMS = ^SENDCMDINPARAMS;

// Status returned from driver
DRIVERSTATUS = record
   bDriverError : BYTE;                 //  Error code from driver, or 0 if no error.
   bIDEStatus   : BYTE;                 //  Contents of IDE Error register.
                                        //  Only valid when bDriverError is SMART_IDE_ERROR.
   bReserved    : array[0..1] of BYTE;  //  Reserved for future expansion.
   dwReserved   : array[0..1] of DWORD; //  Reserved for future expansion.
end;

PDRIVERSTATUS = ^DRIVERSTATUS;
LPDRIVERSTATUS = ^DRIVERSTATUS;

// Structure returned by PhysicalDrive IOCTL for several commands
SENDCMDOUTPARAMS = record
   cBufferSize  : DWORD;               //  Size of bBuffer in bytes
   DriverStatus : DRIVERSTATUS;        //  Driver status structure.
   bBuffer      : array[0..0] of BYTE; //  Buffer of arbitrary length in which to store the data read from the                                                       // drive.
end;

PSENDCMDOUTPARAMS = ^SENDCMDOUTPARAMS;
LPSENDCMDOUTPARAMS = ^SENDCMDOUTPARAMS;

USHORT = BYTE;

// The following struct defines the interesting part of the IDENTIFY
// buffer:
IDSECTOR = record
   wGenConfig                 : USHORT;
   wNumCyls                   : USHORT;
   wReserved                  : USHORT;
   wNumHeads                  : USHORT;
   wBytesPerTrack             : USHORT;
   wBytesPerSector            : USHORT;
   wSectorsPerTrack           : USHORT;
   wVendorUnique              : array[0..2] of USHORT;
   sSerialNumber              : array[0..19] of CHAR;
   wBufferType                : USHORT;
   wBufferSize                : USHORT;
   wECCSize                   : USHORT;
   sFirmwareRev               : array[0..7] of CHAR;
   sModelNumber               : array[0..39] of CHAR;
   wMoreVendorUnique          : USHORT;
   wDoubleWordIO              : USHORT;
   wCapabilities              : USHORT;
   wReserved1                 : USHORT;
   wPIOTiming                 : USHORT;
   wDMATiming                 : USHORT;
   wBS                        : USHORT;
   wNumCurrentCyls            : USHORT;
   wNumCurrentHeads           : USHORT;
   wNumCurrentSectorsPerTrack : USHORT;
   ulCurrentSectorCapacity    : ULONG;
   wMultSectorStuff           : USHORT;
   ulTotalAddressableSectors  : ULONG;
   wSingleWordDMA             : USHORT;
   wMultiWordDMA              : USHORT;
   bReserved                  : array[0..127] of BYTE;
end;

PIDSECTOR = ^IDSECTOR;

SRB_IO_CONTROL = record
   HeaderLength : ULONG;
   Signature    : array[0..7] of UCHAR;
   Timeout      : ULONG;
   ControlCode  : ULONG;
   ReturnCode   : ULONG;// ReturnCode;
   Length       : ULONG;
end;

PSRB_IO_CONTROL = ^SRB_IO_CONTROL;

TDWArray = array of DWORD;

const
  //  Required to ensure correct PhysicalDrive IOCTL structure setup
  MAX_IDE_DRIVES               = 4;
  //  Max number of drives assuming primary/secondary, master/slave topology
  IDENTIFY_BUFFER_SIZE         = 512;
  //  IOCTL commands
  DFP_GET_VERSION              = $00074080;
  DFP_SEND_DRIVE_COMMAND       = $0007c084;
  DFP_RECEIVE_DRIVE_DATA       = $0007c088;

  FILE_DEVICE_SCSI             = $0000001b;
  IOCTL_SCSI_MINIPORT_IDENTIFY = ((FILE_DEVICE_SCSI shl 16) + $0501);
  IOCTL_SCSI_MINIPORT          = $0004D008;  //  see NTDDSCSI.H for definition

  //  Bits returned in the fCapabilities member of GETVERSIONOUTPARAMS
  CAP_IDE_ID_FUNCTION            = 1;  // ATA ID command supported
  CAP_IDE_ATAPI_ID               = 2;  // ATAPI ID command supported
  CAP_IDE_EXECUTE_SMART_FUNCTION = 4;  // SMART commannds supported

  //  Valid values for the bCommandReg member of IDEREGS.
  IDE_ATAPI_IDENTIFY = $0A1;  //  Returns ID sector for ATAPI.
  IDE_ATA_IDENTIFY   = $0EC;  //  Returns ID sector for ATA.

var
  // Define global buffers.
  IdOutCmd : Integer = SizeOf(SENDCMDOUTPARAMS) + IDENTIFY_BUFFER_SIZE - 1;


function DoIDENTIFY(hPhysicalDriveIOCTL: THandle; pSCIP: PSENDCMDINPARAMS;
           pSCOP: PSENDCMDOUTPARAMS; bIDCmd, bDriveNum: BYTE;
           lpcbBytesReturned: PDWORD): Boolean;
procedure PrintIdeInfo(drive: Integer; diskdata : array of DWORD);

implementation

{$R *.dfm}

function ReadPhysicalDriveInNT: Boolean;
var
  done  : Boolean;
  drive : Integer;
  driveName : PChar;
  hPhysicalDriveIOCTL : THandle;
  VersionParams : GETVERSIONOUTPARAMS;
  cbBytesReturned : DWORD;
  bIDCmd : BYTE;
  scip : SENDCMDINPARAMS;
  diskdata : array[0..255] of DWORD;
  ijk : Integer;
  pIdSector : USHORT;
  //pOut :
begin
 done := False;
 drive := 0;
 for drive := 0 to MAX_IDE_DRIVES-1 do
   begin
     hPhysicalDriveIOCTL := 0;
     //  Try to get a handle to PhysicalDrive IOCTL, report failure
     //  and exit if can't.
     driveName := PChar(Format('\\.\PhysicalDrive%d', [drive]));
     //  Windows NT, Windows 2000, must have admin rights
     hPhysicalDriveIOCTL := CreateFile(driveName,
        { dwDesiredAccess }   GENERIC_READ or GENERIC_WRITE,
        { dwShareMode }       FILE_SHARE_READ or FILE_SHARE_WRITE, nil,
                              OPEN_EXISTING, 0, 0);
     if hPhysicalDriveIOCTL <> INVALID_HANDLE_VALUE then
       begin
         // Get the version, etc of PhysicalDrive IOCTL
         FillChar(VersionParams, sizeof(VersionParams), 0);
         if not DeviceIoControl(hPhysicalDriveIOCTL, DFP_GET_VERSION,
                  nil, 0, @VersionParams, sizeof(VersionParams),
                  cbBytesReturned, nil) then
                    begin
                      ShowMessage('DFP_GET_VERSION failed for drive '+ driveName);
                      Exit;
                    end;
         if VersionParams.bIDEDeviceMap > 0 then
           begin
             // Now, get the ID sector for all IDE devices in the system.
             // If the device is ATAPI use the IDE_ATAPI_IDENTIFY command,
             // otherwise use the IDE_ATA_IDENTIFY command
             if Boolean(VersionParams.bIDEDeviceMap shr drive and $010) then
               bIDCmd := IDE_ATAPI_IDENTIFY else bIDCmd := IDE_ATA_IDENTIFY;

             FillChar(scip, sizeof(scip), 0);
             FillChar(diskdata, Length(diskdata), 0);

             if DoIDENTIFY(hPhysicalDriveIOCTL, @scip,
                   @diskdata, bIDCmd, drive, @cbBytesReturned) then
                  begin
                    ijk := 0;
                    //pIdSector := @PSENDCMDOUTPARAMS(IdOutCmd).bBuffer[0]; // ????
                    {for ijk := 0 to 256-1  do
                      diskdata[ijk] := PSENDCMDOUTPARAMS(IdOutCmd).bBuffer[ijk]; }
                    PrintIdeInfo(drive, diskdata);
                    done := True;
                  end;
           end;
         CloseHandle(hPhysicalDriveIOCTL);
       end;
   end;

end;

function DoIDENTIFY(hPhysicalDriveIOCTL: THandle; pSCIP: PSENDCMDINPARAMS;
           pSCOP: PSENDCMDOUTPARAMS; bIDCmd, bDriveNum: BYTE;
           lpcbBytesReturned: PDWORD): Boolean;
var
 cbBytesReturned : DWORD;
begin
 // Set up data structures for IDENTIFY command.
 pSCIP.cBufferSize := IDENTIFY_BUFFER_SIZE;
 pSCIP.irDriveRegs.bFeaturesReg := 0;
 pSCIP.irDriveRegs.bSectorCountReg := 1;
 pSCIP.irDriveRegs.bSectorNumberReg := 1;
 pSCIP.irDriveRegs.bCylLowReg := 0;
 pSCIP.irDriveRegs.bCylHighReg := 0;

 // Compute the drive number.
 pSCIP.irDriveRegs.bDriveHeadReg := $0A0 or ((bDriveNum and 1) shl 4);

 // The command can either be IDE identify or ATAPI identify.
 pSCIP.irDriveRegs.bCommandReg := bIDCmd;
 pSCIP.bDriveNumber := bDriveNum;
 pSCIP.cBufferSize := IDENTIFY_BUFFER_SIZE;

 Result := DeviceIoControl(hPhysicalDriveIOCTL, DFP_RECEIVE_DRIVE_DATA,
             pSCIP, sizeof(SENDCMDINPARAMS) - 1, pSCOP,
             sizeof(SENDCMDOUTPARAMS) + IDENTIFY_BUFFER_SIZE - 1,
             cbBytesReturned, nil);
end;

function ConvertToString(diskdata : Pointer; firstIndex,
  lastIndex: Integer): string;
var
  index    : Integer;
  ch       : char;
begin
 Result := '';
 //  each integer has two characters stored in it backwards
 for index := firstIndex to lastIndex do
   begin
     //  get high byte for 1st character
     ch := Char(Integer(Pointer(Integer(diskdata)+2*index)^) shr 8);
     Result := Result + ch;
     ch := Char(Integer(Pointer(Integer(diskdata)+2*index)^));
     Result := Result + ch;
   end;

   //  end the string
   Result := Result + #0;
end;

procedure printf(mask: string; Args: array of const);
begin
 Form1.Memo1.Lines.Add(Format(mask, Args));
end;

procedure PrintIdeInfo(drive: Integer; diskdata : array of DWORD);
var
  DriveType : string;
  Header    : string;
begin
 //  get drive type info
 if Boolean(diskdata[4] and $00080) then DriveType := 'Removable'
     else if Boolean(diskdata[4] and $00040) then DriveType := 'Fixed'
      else DriveType := 'Unknown';

 case drive div 2 of
   0: Header := 'Primary Controller - ';
   1: Header := 'Secondary Controller - ';
   2: Header := 'Tertiary Controller - ';
   3: Header := 'Quaternary Controller - ';
 end;

 case drive mod 2 of
   0: Header := Header + 'Master drive';
   1: Header := Header + 'Slave drive';
 end;

 printf(Header, []);

 printf('Drive Model Number________________: %s', [ConvertToString (@diskdata, 35, 54)]);
 printf('Drive Serial Number_______________: %s', [ConvertToString (@diskdata, 18, 27)]);
 printf('Drive Controller Revision Number__: %s', [ConvertToString (@diskdata, 31, 34)]);

 printf('Controller Buffer Size on Drive___: %u bytes', [Word(Pointer(Integer(@diskdata)+58)^) * 512]);

 printf('Drive Type________________________: %s', [DriveType]);

 printf('Physical Geometry:     '+
           '%u Cylinders, %u Heads, %u Sectors per track',
           [Word(Pointer(Integer(@diskdata)+18)^),
            Word(Pointer(Integer(@diskdata)+22)^),
            Word(Pointer(Integer(@diskdata)+28)^)]);
 printf(' ', []);

end;

procedure TForm1.Button1Click(Sender: TObject);
begin
 Memo1.Lines.Clear;
 ReadPhysicalDriveInNT;
end;

end.


1://////////////////////////METHOD 2 WITH CPU PROTECTION///////////////////////////////////
2:unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
function GetEnvVarValue(const VarName: string): string;
var
  BufSize: Integer;  // buffer size required for value
begin
  // Get required buffer size (inc. terminal #0)
  BufSize := GetEnvironmentVariable(PChar(VarName), nil, 0);
  if BufSize > 0 then
  begin
    // Read env var value into result string
    SetLength(Result, BufSize - 1);
    GetEnvironmentVariable(PChar(VarName),
      PChar(Result), BufSize);
  end
  else
    // No such environment variable
    Result := '';
end;

{
---List of different variables---
ALLUSERSPROFILE
APPDATA
CLIENTNAME
CommonProgramFiles
COMPUTERNAME
ComSpec
HOMEDRIVE
HOMEPATH
LOGONSERVER
NUMBER_OF_PROCESSORS
OS
Path
PATHEXT
PCToolsDir
PROCESSOR_ARCHITECTURE
PROCESSOR_IDENTIFIER
PROCESSOR_LEVEL
PROCESSOR_REVISION
ProgramFiles
SESSIONNAME
SystemDrive
SystemRoot
TEMP
TMP
USERDOMAIN
USERNAME
USERPROFILE
windir
}


procedure TForm1.Button1Click(Sender: TObject);
begin
 ShowMessage(GetEnvVarValue('PROCESSOR_IDENTIFIER'));
end;

end.
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