WinRAR is a shareware file archiver and data compression utility developed by Eugene Roshal, and first released in autumn of 1993. It is one of the few applications that is able to create RAR archives natively, because the encoding method is held to be proprietary.
A. How To Split File Using Winrar
1. Add To Archive
2. fill "Split to Volume, bytes" and select create SFX archive
3. Process Split File
4. Finish and check Split File Result
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B. How To Merge File Using Winrar
1. Open first File result Split example . winrar.sfx.part.1
2. select Browser to place file Merger
3. Extract File To Merger
4. Finish & Check Result Merger
source http://fakta-dan-unik.blogspot.com & http://teguhtriharto.blogspot.com