2gb.part19.rar -

: You must have every preceding file in the sequence (part01, part02, ... up to part19 and any subsequent parts) saved in the same folder.

: Open only the first file ( part01.rar ) using a program like WinRAR , 7-Zip , or The Unarchiver . 2GB.part19.rar

If this is a reference to a specific viral meme or a specific academic leak (such as a large dataset or a "mega" paper), the context typically implies a massive amount of information that has been compressed for sharing. : You must have every preceding file in