I try to write to a large file, but it seems like it does not work for files larger than 2GB. I have tried with boost::iostreams::file_sink. Is this just a limit with the boost
In NTFS the only real limit is the size of the volume. If you want to test this out you can create a dummy file using the command-line:
fsutil file createnew [filename] [validdatalength]
Ex:
fsutil file createnew TestFile.bin 65536000000
That should create a 64GB file assuming you have an NTFS volume.