Everhart, Glenn
From:	Samuel DELPLACE [S.DELPLACE@archimed.fr]
Sent:	Monday, November 30, 1998 4:21 AM
To:	'Marek Wierzbicki'; ntdev@atria.com
Subject:	RE: [ntdev] Read phisical drive
I've done a such routine long time ago.
I've done reverse ingenering on the boot sector
of disk (the first 512 bytes) and I've found a
trick to know if the disk is NTFS or FAT and to
found serial number. Try this routine (It works only
under NT, but the idea is the same for all OS) : 

DWORD GetSystemVolumeSerialNumber()
{
  HANDLE hFile;
  unsigned char pBuffer[512];
  DWORD dwNumberOfBytesRead;
  DWORD dwSerialNumber;
  long lLength;
  TCHAR sFileName[] = _T("\\.\C:");

    // Open file
    hFile = CreateFile(sFileName,
                       GENERIC_READ,
                       FILE_SHARE_READ | FILE_SHARE_WRITE,
                       NULL,
                       OPEN_EXISTING,
                       FILE_ATTRIBUTE_NORMAL,
                       NULL);
	if (hFile == INVALID_HANDLE_VALUE) return 0;
    
    // Read boot sector
    if (!ReadFile(hFile, pBuffer, 512, &dwNumberOfBytesRead, NULL)) {
        CloseHandle(hFile);
        return 0;
    }
    CloseHandle(hFile);

    // Read serial number
    if (pBuffer[3] == 'N') {
        // NTFS disk
        dwSerialNumber = 0;
        dwSerialNumber |= (DWORD)pBuffer[72];
        dwSerialNumber |= (DWORD)pBuffer[73] << 8;
        dwSerialNumber |= (DWORD)pBuffer[74] << 16;
        dwSerialNumber |= (DWORD)pBuffer[75] << 24;
    } else {
        // Fat disk
        dwSerialNumber = 0;
        dwSerialNumber |= (DWORD)pBuffer[39];
        dwSerialNumber |= (DWORD)pBuffer[40] << 8;
        dwSerialNumber |= (DWORD)pBuffer[41] << 16;
        dwSerialNumber |= (DWORD)pBuffer[42] << 24;
    }
    return dwSerialNumber;
}

----------------------------------------------------------------
                   Samuel DELPLACE
       Software and Computer Graphics Engineer      
 Archimed - 2 place du concert - 59800 Lille - France
Tél : (33) 03 20 13 10 60 - FAX : (33) 03 20 13 10 70
            Url : http://www.archimed.fr
           E-Mail : S.Delplace@archimed.fr
----------------------------------------------------------------

> -----Original Message-----
> From:	Marek Wierzbicki [SMTP:motte@polbox.com]
> Sent:	Sunday, November 22, 1998 10:47 AM
> To:	ntdev@atria.com
> Subject:	[ntdev] Read phisical drive
> 
> I would like read HDD serial number using DeviceIoControl function.
> If the drive is standard IDE I can do it using  DFP_RECIVE_DRIVE_DATA
> (0x0007c084). But if I can't read this way the number of SCSI HDD.
> Mayby anybody know how can I do it? If yes what is the value of
> command
> (I work with Delphi, within there is no definition of IOCTL API) and 
> structures.
> By the way, may be anybody know how can I read HDD serial number under
> 
> WIN9x (it is harder, becouse under WIN9x not exist name 
> "physicalDriverX".
> 
> Marek Wierzbicki
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