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Const int BUFSIZE=161 * 1024;//322 * 512=164864 bytes
Unsigned char lpWriteBuff [BUFSIZE];//to write hard drives (here) drive F data
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Char devName [200].
Strcpy (devName, "\ \ \ \ \ \ PHYSICALDRIVE0");
WriteSectors (devName, 322, 238852096, lpWriteBuff);
//322 is the number of sectors
//I want to write the contents of the lpWriteBuff hard disk (here) drive F offset of 238852096 (logical sector: LBA=238852096 bytes)
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BOOL CCRegProgramDlg: : WriteSectors (char devName [], LONG redpos, LONG wSectors, unsigned char lpWriteBuff [])
{//I want to write the contents of the lpWriteBuff hard disk (here) drive F offset of 238852096 (logical sector: LBA=238852096 bytes) the location of the
//I understand: redpos=322: the number of sectors, wSectors=238852096: set the write data address (the starting point to write data offset)
LARGE_INTEGER li={0};
Li. QuadPart=wSectors;//wSectors=25700620;//should be 512 integer times, (//0 x200=512)
//by setting the write address
//li. LowPart=redpos * 512;
//li redpos HighPart=1024 * * 512;//11983574;//158575088;//redpos * 1024 * 512;
Cstrings ss; Ss. The Format (" li. Li LowPart=% d. HighPart=% d % d % d ", li. The LowPart, li. HighPart, redpos, li. The QuadPart); AfxMessageBox (ss);
HANDLE hDev=CreateFile (devName, GENERIC_WRITE FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);

If (hDev==INVALID_HANDLE_VALUE) return 0;
//SetFilePointer (hDev, 512 * dwStartSector, 0, FILE_BEGIN);//the original code
//SetFilePointer (hDev, li LowPart, 0, FILE_BEGIN);//the statement the results
SetFilePointer (hDev, li LowPart, & amp; Li. HighPart FILE_BEGIN);
//DWORD dwCB;//the original code
Unsigned long dwCB;
BOOL bRet=WriteFile (hDev, lpWriteBuff redpos * 512, & amp; DwCB, NULL);//li LowPart
The CloseHandle (hDev);
Return bRet.
}

//the problem is: SetFilePointer (hDev, li LowPart, & amp; Li. HighPart FILE_BEGIN); Statement
//can't lpWriteBuff [BUFSIZE] the contents of the disk (F) offset address is: the location of the 238852096
//but almost wrote disk C "starting point", to turn it off again after boot, the system can't normal boot
//you can do to help the author to solve this problem, the author is not a computer professional, in terms not necessarily accurate

CodePudding user response:

Strcpy (devName, "\ \ \ \. \ \ F:");

CodePudding user response:

Opens first 0 disk, get other 梹, li. QuadPart is equal to the absolute sectors, written content like you is not enough, and the file system