: Download and install 7-Zip if you haven't already .
: Right-click only on the file ending in .001 (PBSam2.7z.001) . Select 7-Zip > Extract Here or Extract to "PBSam2" . PBSam2.7z.002
To open or "piece together" the file , you need to have all parts of the multi-volume archive in the same folder and use the first file to start the extraction . Steps to Recombine the Files : Download and install 7-Zip if you haven't already