Open a09 file

a09 file icon Did your computer fail to open a09 file? We explain what a09 files are and recommend software that we know can open your a09 files.

What is a09 file?

Files with a09 extension are used for ARJ software. It is a data archive file format.

a09 file description

The a09 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:

  • .arj for first volume
  • .a00, a01, a02 .... etc. for any additional volumes


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.

Software that will open a09 file

ARJ

Once very popular file archiver for MS-DOS

ARJ32

A command line version of ARJ archiver

Other a09 file extensions

a09 - Split Multi-volume ALZip compressed file archive (part 11)

What file extension actually is?

Simply put, file extensions are the characters after the dot in the file name, so for example filename.mp3 has file extension „mp3“. This helps Windows to identify which program should be used to open the file.

We can help you to open your file

Our database contains a huge list of different file extensions, usually with detailed description and programs that can be used to open or otherwise work with that particular file type.

Only original software

Every software listed in our database is verified and ve provide link to the developer or to the software own website, which should hopefuly be enough for you to download the most recent version of the program.