An A02 file functions as part three within a multi-volume archive and won’t open individually because the structural header lives in the first chunk, so programs return errors such as "cannot open volume"; proper extraction requires placing all volumes in one folder and opening the starter—either the main .ARJ or the .A00—allowing archive tools to
pull automatically from A01, A02, etc.; if issues occur, they usually reference missing files, incomplete parts, or CRC errors, and sorting the directory by name helps verify that every expected volume is present.
To confirm what an A02 file belongs to, open the folder and sort by name so related pieces line up, then look for files sharing the exact same base name—if you see `backup.a02`, you should also see `backup.a00` and `backup.a01`, and maybe `backup.a03` or more—then check for a main starter like `backup.arj`, which you’d open instead of A02; if there’s no `.arj` but a sequence beginning with `.a00`, then `.a00` is the correct starter, and you can right-click it and choose 7-Zip → Open archive to verify it loads, while missing numbers or mismatched filenames indicate broken sets that require finding the missing parts.
When I say an A02 file is usually "part 3" of a split archive, I mean it’s simply a later segment of a larger compressed set created when an archiver divides a big file into smaller pieces—typically `.A00`, `.A01`, `.A02`—so A02 isn’t a special format but a continuation of the same data stream, and because the archive header and file index live in the first volume (or a main `.ARJ`), A02 alone won’t open correctly; if you see matching names like `something.a00`, `something.a01`, and `something.a02`, keep them together and open the starter so the extraction tool can chain through A01 and A02 to rebuild the contents.
If you have any questions relating to exactly where and how to use
best A02 file viewer, you can speak to us at the web site. An A02 file often won’t open because it’s only a mid-stream piece, and archive formats expect the header, file list, compression info, and checksums to appear in the opening volume (`.A00` or a main `.ARJ`), so an extractor checking A02’s beginning sees no valid signature and reports "corrupt data"; keeping all parts together and launching the first volume is how the archive tool correctly reads A01, A02, etc. to rebuild the original content.
When an archive program processes A02, it’s simply consuming it as the next part, since extraction logic starts with the first chunk that has the header, and the tool automatically chains through `.A01` and `.A02` as the data stream requires; if A02 isn’t available or is damaged, the extractor stops and reports errors like "unexpected EOF".