win32读取raw扇区

#define WIN32_LEAN_AND_MEAN#include <stdio.h>#include <stdlib.h>#include <windows.h>#define BytesPerSector    512char Drive[] = "\\\\.\\PHYSICALDRIVE0";BOOL ReadPhysicalSector(LONGLONG SectorStart, ULONG SectorCount, PVOID p){ULONG nBytes;BOOL result = FALSE;HANDLE hDeviceHandle = NULL;hDeviceHandle = CreateFile(Drive,GENERIC_READ,FILE_SHARE_READ | FILE_SHARE_WRITE,NULL,OPEN_EXISTING,0, 0);if(hDeviceHandle){LARGE_INTEGER pointer;pointer.QuadPart = SectorStart;pointer.QuadPart *= BytesPerSector;SetFilePointer(hDeviceHandle, pointer.LowPart, &pointer.HighPart, FILE_BEGIN);if(ReadFile(hDeviceHandle, p, SectorCount*BytesPerSector, &nBytes, NULL))result = TRUE;elseprintf("read error %d\n", GetLastError());CloseHandle(hDeviceHandle);}else{printf("open error %d\n", GetLastError());}return result;}#define Printable(cc) ((cc>='a' && cc<='z')||(cc>='A' && cc<='Z'))int main(){int n = 2, s, i, j;UCHAR data[n*BytesPerSector], *p;if (ReadPhysicalSector(0, n, data)){for (s=0; s<n; s++){for (i=1; i<=BytesPerSector; i++){p = data + s*BytesPerSector;printf("%02x ", p[i-1]);if (i % 16 == 0){for (j=i-16; j<i; j++)printf("%c", Printable(p[j])?p[j]:'.');printf("\n");}else if (i % 8 == 0) printf(" ");}printf("-----------------------------------------------------------------\n");}}return 0;}