Logical drive copying using CreateFile

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"Software Engineer" <SoftwareEngineer@discussions.microsoft.com> wrote in
message news:0EEAFFA9-612B-432D-A07A-EAD4DF9785F9@microsoft.com...
> Hi,
>
> In the following code i am copying the contents of logical drive F to G
> and then after that, from G to H.
>
> After the program execution completes, the contents of the drives g and
> h are not updated in windows explorer, even after pressing F5.
>
> If I executed chkdsk on G and H drives the content sync up with that of F.
> This problem is reproducable on NTFS but is not there on FAT32 partitions.
>
> Please suggest the reason and a possible solution to fix this problem.
>
> I have tried this program on 400 MB drives but the problem is reproducable
> on any sizes.
>
> Thanks in Anticipation.
>
> --------------------------------------------------------------------------
-
> #define _WIN32_WINNT 0x0500
> #include<windows.h>
> #include<iostream.h>
> #include<conio.h>
>
> void main()
> {
> char buffer[1024];
> unsigned long bytesread;
>
> HANDLE
> h=INVALID_HANDLE_VALUE,h2=INVALID_HANDLE_VALUE,h3=INVALID_HANDLE_VALUE;
> h = CreateFile(
> "\\\\.\\f:", // file name
> GENERIC_READ, // access mode
> FILE_SHARE_READ | FILE_SHARE_WRITE, // share mode
> NULL, // SD
> OPEN_EXISTING, // how to create
> 0, // file attributes
> NULL // handle to template file
> );
>
> if(h==INVALID_HANDLE_VALUE)
> {
> cout<<"first open failed"<<GetLastError()<<endl;
> getch();
> exit(1);
> }
> else
> {
> cout<<"first open successful"<<endl;
> }
> h2 = CreateFile(
> "\\\\.\\g:", // file name
> GENERIC_READ|GENERIC_WRITE, // access mode
> FILE_SHARE_READ | FILE_SHARE_WRITE, // share mode
> NULL, // SD
> OPEN_EXISTING, // how to create
> FILE_FLAG_WRITE_THROUGH, // file attributes
> FILE_FLAG_WRITE_THROUGH | FILE_FLAG_NO_BUFFERING
> NULL // handle to template file
> );
>
> if(h2==INVALID_HANDLE_VALUE)
> {
> cout<<"second open failed"<<endl;
> getch();
> exit(1);
> }
> else
> {
> cout<<"second open successful"<<endl;
> }
>
> while(ReadFile(h,&buffer,sizeof(buffer),&bytesread,NULL) &&
bytesread)
> WriteFile(h2,buffer,bytesread,&bytesread,NULL);
>
> FlushFileBuffers(h2);
>
> CloseHandle(h);
> CloseHandle(h2);
>
> h2=INVALID_HANDLE_VALUE;
>
> cout<<"First write done"<<endl;
>
> h2 = CreateFile(
> "\\\\.\\g:", // file name
> GENERIC_READ, // access mode
> FILE_SHARE_READ | FILE_SHARE_WRITE, // share mode
> NULL, // SD
> OPEN_EXISTING, // how to create
> 0, // file attributes
> FILE_FLAG_WRITE_THROUGH,
> NULL // handle to template file
> );
>
> if(h2==INVALID_HANDLE_VALUE)
> {
> cout<<"second open failed"<<endl;
> getch();
> exit(1);
> }
> else
> {
> cout<<"second open successful"<<endl;
> }
>
> h3 = CreateFile(
> "\\\\.\\h:", // file name
> GENERIC_WRITE, // access mode
> FILE_SHARE_READ | FILE_SHARE_WRITE, // share mode
> NULL, // SD
> OPEN_EXISTING, // how to create
> FILE_FLAG_WRITE_THROUGH, // file attributes
> FILE_FLAG_WRITE_THROUGH ,
> NULL // handle to template file
> );
>
> if(h3==INVALID_HANDLE_VALUE)
> {
> cout<<"third open failed"<<endl;
> getch();
> exit(1);
> }
> else
> {
> cout<<"third open successful"<<endl;
> }
>
> while(ReadFile(h2,&buffer,sizeof(buffer),&bytesread,NULL) &&
> bytesread)
> WriteFile(h3,buffer,bytesread,&bytesread,NULL);
>
> FlushFileBuffers(h3);
>
> CloseHandle(h2);
> CloseHandle(h3);
> }
>
> --------------------------------------------------------------------------
----