The .daa file extension (Direct Access Archives) is the format created by PowerISO much similar to large ISO files. It is commonly used because it compresses original data, can be password-protected and is able to be split into smaller parts. The .daa files are most commonly used online to distribute large files on the internet through P2P downloads or through the bittorrent network. Even though PowerISO is free to use as trial, it has limits regarding how big file size you can open with it. It is only able to extract and open .daa files which are up to 300mb in size. Most of the downloaded .daa files you will encounter will likely be larger then this limit leaving you with no option to open .daa files. That is where a free program called daa2iso will help you.

Daa2ISO will convert your .daa file to ISO format which can easily be opened with several popular compression utility software or you can easily burn your newly created ISO file using free burning software such as Burn4Free or ImgBurn.

4 Steps to Convert .daa file to ISO and burn it to CD:

1. Download and open daa2iso.exe and select your daa file
2. Convert it to ISO and save it on your HDD.
3. Open Burn4Free or ImgBurn and select your ISO file
4. Burn it to CD or DVD as required.

Alternatively, you could use disk image emulator software which will mount your converted ISO image to a virtual drive, allowing you to see all contents within the ISO image. Some common disk image emulation software are Daemon Tools, Alcohol 120%, and MagicDisc. ISO files are also easily opened and extracted using Winrar, 7-Zip, ALZip or Universal Extractor.

There is also DAA Converter available for Mac OS X which will convert .daa files to ISO format. It is based on daa2iso software for windows. It runs on Mac OS X 10.3 Panther or later.

I hope this article helps you in achieving your goal to open .daa files. If you have any comments or questions, leave a comment and I will promptly reply.