C / C++ / MFC

HANDLE hDrive ;
wchar_t driveName[128];

for(int i = 0; i < 16; ++i)
{
  wsprintf(driveName, L"\\\\.\\PhysicalDrive%d", drive);
  hDrive = CreateFile(driveName, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE , NULL, OPEN_EXISTING, 0, NULL);
  ...
}

HANDLE hDrive;
WCHAR sDriveName[128];
OBJECT_ATTRIBUTES oa;
UNICODE_STRING usDriveName;
IO_STATUS_BLOCK iosb;
NTSTATUS Status = STATUS_UNSUCCESSFUL;
int drive;

for(drive = 0; drive < MAX_IDE_DRIVES; drive++)
{	
  _snwprintf(sDriveName, 128, L"\\Device\\Harddisk%lu", drive);
  RtlInitUnicodeString(&usDriveName, sDriveName);

  InitializeObjectAttributes(&oa, &usDriveName, OBJ_INHERIT, NULL, NULL);

 if(NT_SUCCESS(ZwOpenFile(&hDrive, FILE_ALL_ACCESS, &oa, &iosb, FILE_SHARE_READ | FILE_SHARE_WRITE, FILE_DIRECTORY_FILE)))
  {
    ...
  }
}