Howto open .daa files (Direct-Access-Archive) under Linux / UNIX

by on April 7, 2006 · 25 comments· LAST UPDATED July 24, 2008

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Q. How do I open .daa file under Linux or UNIX or Windows?

A. You need to use PowerISO for Linux (windows xp/vista/2000 user see below)-- This is a free utility for linux which can extract, list, and convert image files (including ISO, BIN, DAA, and other formats). Type "poweriso -? " for detailed usage information. It is a disk image format that supports advanced features, such as compression, password protection, and splitting to multiple volumes.

Update: Checkout AcetoneISO - a GUI utility for Linux and the disk image emulator that mounts images of DVD and CD media. It can open your .daa file.

Open .daa file - Linux only program

Download poweriso here. Or use wget program:
$ wget
$ tar -zxvf poweriso-1.2.tar.gz
$ ls



Task: list all files and directories in root direcory of /mnt/iso/obsd39/cd39.iso

$ ./poweriso list /mnt/iso/obsd39/cd39.iso /
$ ./poweriso list /mnt/iso/obsd39/cd39.iso / -r

Convert files/directories from .daa image file

Convert image file to other format. For example convert image.daa to standard iso file, enter:
$./poweriso convert image.daa -o image.iso -ot iso

Extract files/directories from image file

Extract all files and directories in root directory of /mnt/iso/obsd39/cd39.iso to /tmp recursively:
$ ./poweriso extract image.iso / -od /tmp

Task: Display help

Type poweriso -? for help:
$ ./poweriso -?

Open daa file - MS Windows only program

You need to use special shareware program called PowerISO to open .daa extension files. This program only works under MS-Windows. See PowerISO web site for more information.

Download PowerISO

Download a free copy of PowerISO (trial version i.e. try it before you purchase software) for MS-Windows.

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{ 25 comments… read them below or add one }

1 thumger November 6, 2006 at 6:18 pm

Just noticed that PowerISO have now released a free extractor/converter for Linux – it worked fine for me. From their website:-

PowerISO for Linux — This is a free utility for linux which can extract, list, and convert image files (including ISO, BIN, DAA, and other formats). Type ” poweriso -? ” for detailed usage information. File Size: 253KB


2 nixCraft November 6, 2006 at 9:55 pm


Thanks for update. I am sure it will help lots of Linux end user. I have updated the post :)


3 Peter December 7, 2006 at 8:57 pm

Note for PowerPPC Linux users: The Linux version is a i386 binary only, so don’t bother downloading it…

I don’t understand why somebody uses a single platform (i386) closed source compression utility when there are many better, more compatible, open source utilities available.


4 Joe March 4, 2007 at 4:11 am

Unfortunately it will not run under FreeBSD (6.1) with linux compatibility enabled, even when brandelf is run on it :(


5 sebastien April 16, 2007 at 12:48 am

Works perfectly on linux 2.6.20. Thanks!


6 sebastien April 16, 2007 at 12:53 am

“Please have some patient while your comments go through all these anti-spam technologies.”

Er, I’m not a doctor, you probably mean “Please have some patience”? ;)


7 nixCraft April 16, 2007 at 2:11 pm


Thanks for the heads up :)


8 skOre April 18, 2007 at 12:27 pm

Thats BS – You just need – Acetoneiso


9 sebastien April 27, 2007 at 6:55 am

skOre: Actually, AcetoneISO is using PowerISO (and several other existing converters). Without these converters, AcetoneISO is nothing; without PowerISO, AcetoneISO can’t access DAA files at all.

AcetoneISO may even be illegal, violating PowerISO’s license and GPL, since it’s distributed under GPL and PowerISO is a copyrighted close-source program.


10 kasia February 7, 2012 at 8:10 pm

It is not illegal to use a program that is not OS. All this copyright paranoia is warping reality.


11 Nano May 23, 2007 at 5:31 pm

THere is an error on the converting procudere. It should be:
/poweriso convert /mnt/iso/obsd39/cd39.iso -o /tmp/cd39.iso -ot iso


12 luca June 17, 2007 at 1:03 am

to sebestien: in fact AcetoneISO uses poweriso to convert and there is nothing to be shamed of it since it’s proprietary. did you see the new AcetoneISO2? it’s not a simple program anymore, it is in qt4 and handles ISO BIN MDF NRG IMG and mounts them in automatic without needing destination , shows them on display and much more.

saying “AcetoneISO is nothing” is just a free offense to their work. and you know what? the new version doesn’t inlude poweriso but it will download as an external program only when needed. so it is not illegal.
c ya


13 Razaul Hassan (New Delhi) June 19, 2007 at 1:54 pm

Thanks for the information.I used MagicISO it did’t work.I hope PowerISO will do the work.




14 Isaac T. Madsen January 20, 2008 at 9:39 pm

Try this tutorial: DAA2ISO freeware utility.


15 matt April 7, 2008 at 1:22 am

Hi, to actually get at .daa files using poweriso run

./poweriso convert file.daa -o file.iso -ot iso



16 PICCORO April 15, 2008 at 10:33 pm

there a gnu new daa2iso converter tool, and teh debian package is here:

the man pages are too, just command “man daa2iso” for usage convertion from .daa file image to .iso image!

cdemu kernel user space can also mount directly many image file types, wihtout converting it!


17 Jorge June 8, 2008 at 12:31 am

Hi, I have a problem once with a zip file. I tried to open it with fileroller and ark, both should work to open that file but they wouldn’t. I installed wine and I ran winrar succesfully to open the file. You could do the same but with IsoBuster or PowerISO.


18 mahboop July 20, 2008 at 2:12 am

it works for me
using PowerISO
i convert my file from .daa to .iso
then i extract it

thank you very much


19 Jayne July 23, 2008 at 7:21 am

I followed your instructions. Unfortunately, after accessing the file, the system comes back with a message:

“File version mismatch. To open this file, please visit our website to get the latest version.”

Can you advise on what to do?


20 mahboop July 23, 2008 at 7:23 pm

dear Jayne
download the latest version of PowerISO
from the website

good luck


21 Tim August 22, 2008 at 1:46 pm

This does work on FreeBSD 7. You need to “bandelf -t linux poweriso” and have linux compatibility enabled.


22 trebortsorf December 30, 2008 at 5:53 pm

this will do the job. poweriso is a i386 precompiled binary so is useless for anyone using linux on ppc, mips etc or *bsd solaris etc etc…. i.e. should be listed as linux/i386 and not just linux.

This runs successfully on my ppc debian box.


23 z666zz666z March 17, 2010 at 5:30 pm

There is a much better option than converting… direct use / mount .daa files…

For Linux: use CDemu it can mount .daa (with compression and encryption also) directly as a VirtualCD unit (Note: cdemud must be running as daemon, better if –bus-type=system)

For Windows: use MagicDisc, or any other Freeware VirtualCD/DVD

Why you all people tell others only conversion utilities? While there exist direct mount utilities.

In my personal case i have more than one thousand CDs ripped to .daa on an external USB disc… when i need one i mount the file as a virtual cd drive (no matter if i use Linux or Windows) and use it as if i had converted and burned to a CD-R… also is valid for DVDs.


24 macsim January 19, 2012 at 10:14 am

@Vivek Gite,

Hi, I took the liberty to translate your post in French on my blog, indeed I add a notification about you and link to original post.

You can find it here

Feel free to e-mail me, if you want me to remove it.

Keep going


25 Prashant Adlinge March 9, 2013 at 5:49 am

Can I mount a DAA file in linux as we can mount iso file using Archive mounter in linux?


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