Help With Accessing Image Contents

hello, newbie here, i came to consult the elders of this site on a prob i have :bow: .lol

Anytime i try mounting any image(ISO or MDF) thats large (for example one thats about 6.05GB), it mounts successfully. but i cant access the contents; if i try to click on the image drive (eg H:) i get a DISK IS NOT FORMATTED error :sad:

so what can i do, to make it mount well so i can access the drive contents.
I use Daemon Tools 4.10 or Alcohol 1.4.3

Thank you very much :o

some help please???

Create a new image of the content, then try to mount that.