http://en.wikipedia.org/wiki/ISO_imageAn ISO can be "mounted" with suitable driver software, i.e. treated by the operating system as if it were a physical optical disc. Most Unix-based operating systems, including GNU/Linux and Mac OS X, have built-in capability to mount an ISO. Windows 8 also has such capability.[2] For other operating systems software drivers can be installed to achieve the same objective.
[2]
http://www.extremetech.co...ounting-of-iso-and-vhdAugust 30, 2011 article
Comments on the last link may help, but I do not know that much about *.iso files, just know they exist, but if I ever wanted to use them, that was another bit I am not sure about.
I do admit I am not sure about anything with this subject, except hard disk drives are so big, they have a program I think to make them usable in the first place, and I think that is what Acronis is, at least to me at this point. Virtual Disk Bus of Acronis tells an OS how to use the Harddisk I think or I am guessing. It's a 1Tb harddisk and 2Tb or larger are different also. It is listed under Device Manager on my Windows 7, but still there is no program I can access.
Nothing there I can access as to program though. No CD did I get with my computer, just make a copy of Windows 7 or consult the manufacturer of the computer and put in serial number or something like that perhaps and re-download Windows 7 from them as was put on the machine in the first place, I guess. But I disabled Acronis and then the BSOD when Windows tried to start, never can really get up the menu starting Windows 7 either, but it came up automatically and said it try to fix my computer - well it did not, and the only thing I could do was try a restore point - and that worked, otherwise I was sweating at what I had done thinking that it would not cause a problem in the first place, but it sure did.
But I made DVD's (3) of Windows 7 like I said.
Othewise I would have to look it all up I guess.