DMK File

What are DMK files and how to open them

Are you having problems opening a DMK file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a DMK file?

DMK files have multiple uses, and PERQ Disk Image is one of them. Read more about the other uses further down the page.

PERQ Disk Image

The .DMK file extension refers to PERQ Disk Image files, which are used to store exact copies of the contents of a disk for the Three Rivers PERQ computer. These files can be used to create data backups, distribute the contents of a disk over the internet, or preserve the contents of old or damaged disks.

How to open DMK files

Important: Different programs may use files with the DMK file extension for different purposes, so unless you are sure which format your DMK file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested two different DMK openers which you will find listed below.

Last updated: January 9, 2023

All known file formats using extension .DMK

While PERQ Disk Image is a popular type of DMK-file, we know of 2 different uses of the .DMK file extension. Different software may use files with the same extension for different types of data.

TRS-80 DMK Disk Image

We know that one DMK format is TRS-80 DMK Disk Image. We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

Various apps that use files with this extension

These apps are known to open certain types of DMK files. Remember, different programs may use DMK files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about DMK file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.