I have an image file in mdf/mds format that on this system, opens in Daemon tools perfectly, works without any hiccups.

When I transfer it to the laptop, it mounts ok and is visible as a virtual drive, when I  try and open it there, the initial file opens ok .. then I get a message "can't find DVD ROM"

Both computers are XP SP3, both are running the latest Daemon tools, I've copied the files across in 3 different ways .. so its not a corrupt file problem.

I've also tried a programme called MagicDisc ... same result .. works on this system .. fails on laptop .. :(

Anyone any ideas ???

Obvious one but is the DVD drive working ok on the laptop?  Check that its reading DVD's ok and also check the device manager.

Just a thought, copy the file(S) to your laptops hard drive, then open from your programs file menu rather than the Disk.

Try extracting the mdf/mds file on the original system to a regular ISO. ISO is universal and won't rely on a mounted virtual (or real) drive.

If not, UltraISO might help (for the laptop)
http://www.freedownloadscenter.com/Utilities/Backup_and_Copy_Utilities/UltraISO.html

Also, Alcohol 120% seems to be the native software for mdf/mds files.
http://www.download.com/Alcohol-120-/3000-2646_4-10158124.html

Thanks for the ideas .. the nature of the programme is such that it has to be run from a vitrtual disk , can't be "split" using an ISO programme.

What is doing my head in is that it works on one system but not the other .. :(

Downloading alchohol120 to try that now ..  :y :y

Edit : same on alchohol .. :( ...

edit 2 :  Just noticed a very small thing ... when mounted on this system .. if you go to "my computor" .. the virtual drive is still "DVD Drive (I:)" and it works, ... on the laptop as soon as you mount the image the drive changes to "ACFGDE46 (I:)" and it won't work ... I wonder why the difference ???

Entwood wrote on 16. Oct 2008 at 23:03:

Thanks for the ideas .. the nature of the programme is such that it has to be run from a vitrtual disk , can't be "split" using an ISO programme. What is doing my head in is that it works on one system but not the other .. :( Downloading alchohol120 to try that now ..  :y :y Edit : same on alchohol .. :( ...

Presume then that Daemon Tools etc are able to mount a virtual drive on the laptop with the same drive letter as it was compiled/compressed with?

That was what I think I was getting at with the ISO suggestion..?

Tried different drive letters, presently set up as identical .. :(

most weird .. but off to bed now .. it can wait 'til tomorrow ... :(

try power ISO never failed at opening stuff with that

I have had some grief with daemon tools,
but only with a specific version of a program that used to install easily.

What prog are you trying?  And is this the free version of daemon tools or the professional version.

PM if you would rather ;)

PM sent .. :)