Ensure you have downloaded every single part of the archive. Missing even one part will cause the extraction to fail. 2. Organize the Files
“Is it safe to open .part2.rar from unknown source”
This indicates the iteration of the release. Version 1.0.3 signifies that the underlying software or media has undergone minor revisions or bug fixes since its initial 1.0.0 launch.
: The indicator for a split volume. This specific file holds the second sequence of data compressed using the Roshal Archive (RAR) format. How Multi-Part RAR Archives Work
I typed: Yes.
RAR (Roshal Archive) is a proprietary archive file format that supports data compression, error recovery, and file spanning. How Multi-Part RAR Archives Work