Has anybody noticed that double-clicking on a DMG file no longer raises the mounted image to the front of all windows? It used to be that when you double-clicked a dmg file, it would pop-up but now you have to click Finder and click on the mounted image.

Is this a bug, by design or a setting that I can change?

Update: As per Daniel Beck's suggestion, I created a new account and downloaded the most recent version of Firefox via Safari. It still exhibited the same behavior. However, I noticed that if I double-click thew DMG from within the Downloads folder in Finder, it does pop up. But when I double-click the DMG within Safari (and Firefox also) it does not pop up over all other windows.

  • 1
    Cannot reproduce. Create a second user account on your machine and try there. What happens?
    – Daniel Beck
    Jan 1, 2012 at 10:48
  • Also, does it happen with any .dmg file or just specific ones? I tried with the Path Finder and Google Chrome images: They all opened new windows.
    – Daniel Beck
    Jan 1, 2012 at 10:49
  • @DanielBeck - How did you open the image? Did you double-click the dmg from Finder or from the browser you downloaded with?
    – user41608
    Jan 8, 2012 at 1:55
  • Finder. You're right: When opened from Safari, Safari doesn't let Finder take over focus. It's only frontmost for a very short time until Safari comes forward again. It suffices to Cmd-Tab to Finder though, different from what you describe.
    – Daniel Beck
    Jan 8, 2012 at 9:10
  • Similar problem here on 10.8.2 ... Finder does take over focus even when *.dmg file is clicked in the Downloads stack (in Dock) Oct 8, 2012 at 11:23

1 Answer 1


Are you opening the DMG from a full-screen application? When a full screen app is open, nothing else can is supposed to share that space, so the DMG will open in your first space.

AKA:- it's design due to the fact that full-screen applications aren't meant to have popups over them.

  • No, it's not being opened from a full-screen application. I'll have to fire up my old Mini to verify the old behavior of dmgs popping up on 10.5 & 10.6
    – user41608
    Jan 8, 2012 at 1:56

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