Large files are often split into smaller "volumes" to make them easier to upload or share. usually ends in .7z.001 Part 2: ends in .7z.002 (this is the file you have!) Subsequent parts: .7z.003 , .7z.004 , and so on. 2. The Golden Rule: Collect All Parts

How to extract files from a split 7zip archive? - Ask Ubuntu

How to Open Split Archives: A Guide to .7z.001 and .7z.002 Files