Unable to create "image.dmg" - Invalid argument

Strange. I suppose you are working from Disk Utility.

Does it work if you try to make one on your internal HD? It could be a compatibility problem with your external HD.

If it does not work on your internal HD I would suspect the DU is funky. Could you reinstall it from your original DVD?

Could you reinstall it from your original DVD? It might be bugged.

Yes, you can, you use Pacifist.

Here is the info:

http://www.charlessoft.com/Pacifist_Documentation/English/instructions.html

Download here:

http://www.charlessoft.com/

however you can also do it via terminal, however I do not know for sure what the package is called. I suppose Disk Utility (maybe someone can confirm tis).

Just insert the Disc labeled "Mac OS X Install Disc 1", then open a Terminal and copy/paste the following in (in one line):

cp /Volumes/Mac\ OS\ X\ Install\ Disc\ 1/System/Installation/Packages/DiskUtilety.pkg ~/Desktop/

Note the blank space between "pkg" and "~/Desktop". You don't have to be afraid of the Terminal. This command will copy (cp) the file DiskUtilety.pkg (you might have to try different names, I am guessing here it is without a space) to your Desktop (~/Desktop/) where you can double-click it in order to run the installer. It's simple like that.

Message was edited by: ChangeAgent

OK Dave, I am running out of ideas.

Do you still have free support with Apple? if so give them a buzz.

Other possibility is that it is a Permission issue. Have you looked at that?

MacDave1967 wrote:
Good thinking, ill take a look at permissions !

Will let you know

love to hear

Yes, have apple support, dont like the hanging on the phone for ages though

I know I usually have an other easy job at hand and do that while I wait and listen.