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Split Multi-volume ARJ compressed file archive (part 22)
File type: Archive and compressed file
An a20 file extension is related to the ARJ compression tool for MS-DOS and Microsoft Windows operating system. An a20 file stores ARJ compressed file archive part 22.
File type category:
Archive and compressed file
Date updated: July 19, 2025
The a20 file extension is associated with ARJ. Its one part of a multi-volume compressed ARJ archive.
arj is the native format of ARJ archiver.
ARJ is a file archiver that compresses files into a disk space saving archive. It is fast, reliable, and has a rich set of features which include Windows 9x, Millenium long filename support, file version management, data damage protection, ANSI escape sequence display handler, configurable command options, multiple volume archives (archives that span diskettes) and much more.
Some arj files can be parts of a multi-volume sequences. In ARJ you can split a huge archive to a few smaller files, which are called volumes.
ARJ archiver does use the following sequence:
In order to unpack the multi-volume ARJ archive, you need to place ALL of the split parts in the same directory and start extraction of the first volume (.arj). The program will automatically use all of the parts to extract the content of the archive.
The a20 (e.g. Avatar.a20 file) file is only one part of ARJ multi-volume archive. If you want to extract this file, you must have all parts of the ARJ multi-volume archive. Open the first part of ARJ (e.g Avatar.arj file) multi-volume archive in ARJ application and extract files from ARJ multi-volume archive.
It is not possible to convert only one part of ARJ multi-volume archive. Only complete ARJ archive can be converted in to another archive or compression format. The easiest way how to convert complete ARJ multi-volume archive is to decompress the ARJ archive with the use of ARJ or any other supported archiver and repack the content with another compression or archive application of your choice.
Software applications that can open a20 files:
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