A multi-part archive is a single collection of data broken into pieces. Each part contains a portion of the total compressed data and is dependent on the others; you cannot extract the contents of .part2.rar by itself.
To successfully "join" these parts and access the original files, follow these requirements: File: part_2.rar ...
Parts are usually numbered sequentially, such as filename.part1.rar , filename.part2.rar , etc.. A multi-part archive is a single collection of