Put every volume in the same folder and open the first part, usually .zip.001, .7z.001, or part1.rar. Do not rename the parts or mix them with other archives.
A split archive is one archive spread across several numbered files. It is different from a folder that merely contains several independent ZIP files.
Identify the set before you do anything else
Independent archives
report.zip and photo.zip are separate files. You can batch extract them, but they are not one archive spread across volumes.
Split archive volumes
archive.zip.001, archive.zip.002, and archive.zip.003 are one archive with numbered parts. They must stay together.
Open the first volume
- Keep every part in one folder.Collect the numbered files into the same folder before opening anything. A missing part usually means the set is incomplete.
- Start with the first volume.Open the .001 or part1.rar file. Karuzip reads the later parts in order when they are present beside the first file.
- Extract only after the set is complete.Confirm that every expected part is present, then extract to a different empty folder so the result is easy to verify.
The part number is part of the archive structure. If you change the names, Karuzip can no longer follow the set correctly.
Frequently asked questions
What is a split archive volume?
A split archive is one archive spread across several numbered files, such as the first ZIP volume (.zip.001), the next ZIP volume (.zip.002), or the first split RAR volume (part1.rar). The first volume is the entry point.
Which file should I open first?
Open the first volume, usually the first numbered ZIP or 7z part, or part1.rar for split RAR sets. Keep the other volumes in the same folder so the app can read them in order.
Can I rename the volumes to shorter names?
No. Do not rename the parts while you are trying to open the archive. The numbering is part of how the archive is read.
Does one missing volume mean the archive is broken?
Usually yes. If one numbered volume is missing, you need to get the complete set again before extraction can succeed.
Can split archives still be password-protected?
Yes. A split archive can still require the correct password. Keep the full set together, open the first volume, and then enter the password when the extraction step requests it.
Official references
- 7-Zip: How to recover corrupted 7z archive — official split-volume and recovery notes (accessed August 13, 2026).
- 7-Zip FAQ — official notes about opening archives and extraction behavior (accessed August 13, 2026).
- 日本語版：分割ZIPの作り方・解凍方法 — original split-volume guide (accessed August 13, 2026).
Open the first volume and keep the rest together
Karuzip helps you keep split volumes organized before extraction. No ads, no bundles, and no app telemetry.