Unable to create disk image Not enough space left

If you select the option to use encryption, it will ask you for the password after you start the process, which may be after you get this error about "no space left on device."

How large is this disk image? How much free space is available on your startup drive?

Not sure what is happening to cause this error... When you select the place to save the image file, you are selecting a location that is inside your user home folder?

The Desktop folder is technically in your user home folder, so that should not be a problem.

Forgot to ask earlier, but have you restarted the iMac since you noticed this problem?

I think you said earlier that you get this error with or without using the encryption option, is that correct?

As a test, you can create a new admin user account in System Preferences Accounts pane

http://docs.info.apple.com/article.html?path=Mac/10.6/en/8235.html

Log out and log in to the new account. Try doing the same thing in the new account. Does the same problem recur?

Are you saying that even when you specify 100mb as the size of the disk image, it creates one that is 120GB in size? Or are you saying that if you specify 120GB (or some other larger number) as the size, it works, but not for a smaller size disk image?

And are you saying there is a difference in the new user account, or that the problem is the same in both new and existing accounts.

When you select +File -> New -> Blank Disk Image+ (from Disk Utility's menu bar), you should get a Save dialog, where you select where to save the file (you should select a location in your user home folder), name of the file as well as name of the disk image, size, format, encryption, and a few other characteristics. You have to see this dialog box before you can proceed to create the disk image, so I don't know what's happening in your case.

I'll have to try it from the icon. Maybe it's a bug.

Looking for some enlightment too...

I have good experience in creating a disk image. But since I've been using Snow Leopard (Clean install) its been a pain to create a simple disk image. Nothing works. Encrypted or not, partition mapping style or other settings change still does not make it happen.

The situation is that around 5 minutes after the disk image creation process is launch the progress bar stagns and the fan keeps spinning high to cool off the processor. I've even let it do for an entire night and got some error message that I unfortunately can't recall but it was something very unhelpful like ''unable to complete disk image''

I'm wondering really if I'm the only one to have such a problem.

I cant say I have had your fan problems but, this process worked for me. I made 100mb encrypted read/write, Mac OS extended Journaled

When you click on your disk Utility app it should load up and come up with a large square that says in the middle of it Select a disk, volume, or image.

From there go up to New Image with out touching any of your drives in the side bar.

Do you get the normal screen from there with pop down options for size, ect..?

Is there any possibility that your using a strange name, I went for desktop and put a encryption and it worked for my for the first time.

The next step that could possibly help is do a system repair with the OS disk from startup.

Hopefully its something just fundamental that's gone wrong.

Good luck,
Simon

If you have done so since upgrading to Snow Leopard, run Disk Utility and use +Repair Disk Permissions+. If you have not restarted the iMac since noticing the problem, be sure to do that too.

If that does not help, try the test mentioned earlier in this topic and create a new admin user account. See if it works if you are logged into that account.

It's fine I know how to do it, was just trying to help out the other person.