Adi.7z.001 -

You can use the free, open-source 7-Zip utility or other archivers like PeaZip . A Review of 7-Zip, a Free File Extractor Program - Lifewire

: All parts must be stored in the same directory for the extraction software to recognize them as a single set. ADI.7z.001

: You need all parts of the archive (e.g., ADI.7z.001 , ADI.7z.002 , ADI.7z.003 , etc.). You can use the free, open-source 7-Zip utility