Code Library » win32 http://www.ucosoft.com Free Source Code and Program Tips Mon, 19 Jul 2010 04:51:18 +0000 en hourly 1 http://wordpress.org/?v=3.0 How to read sectors of a physical drive under Win32? http://www.ucosoft.com/how-to-read-sectors-of-a-physical-drive-under-win32.html http://www.ucosoft.com/how-to-read-sectors-of-a-physical-drive-under-win32.html#comments Mon, 15 Jan 2007 15:44:52 +0000 support http://www.ucosoft.com/archives/74.html

How to read the sectors of physical drive under win32?

The API ReadFile is most useful function, and with it, you can read the physical sectors directly.

Here is a sample function, BOOL ReadSectors(…)



BOOL ReadSectors(
BYTE bDrive, //drive index
DWORD dwStartSector, //start sector
WORD wSectors, //sectors number
LPBYTE lpSectBuff)
{
　if (bDrive == 0) return 0;
　char devName[] = “\\\\.\\A:”;
　devName[4] =’A’ + bDrive – 1;
　HANDLE hDev = CreateFile(devName, GENERIC_READ,
FILE_SHARE_WRITE, NULL,
OPEN_EXISTING, 0, NULL);
　if (hDev == INVALID_HANDLE_VALUE) return 0;
　SetFilePointer(hDev, 512 * dwStartSector,
0, FILE_BEGIN);
　DWORD dwCB;
　BOOL bRet = ReadFile(hDev, lpSectBuff,
512 * wSectors, &dwCB, NULL);
　CloseHandle(hDev);
　return bRet;
}

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