0001.rar -

: The software will automatically detect and join the subsequent parts to recreate the original large file. How to Open and Extract .001 Files - Microsoft Q&A

A file named is typically the first part of a split archive . When a large file or folder is too big for a single archive, it is divided into smaller pieces—often labeled .001 , .002 , or part1.rar , part2.rar —to make them easier to download or share. How to Reassemble the Full Post 0001.rar