With this option selected, DropDMG will make images that automatically open their root folder when mounted. That is, when you double-click the image in the Finder, its window will open. This is especially useful for images that you will be distributing to other users. Depending on how their Finders are configured, they may not see the image’s icon appear on the desktop; therefore, making the image window auto-open provides a superior user experience.
If you burn an image that is set to auto-open, the CD/DVD window will auto-open when the disc is inserted.
In Mac OS X 10.4, the preferences set in Disk Utility override an individual image’s auto-open setting. The default is for read-only images to auto-open and for read-write images not to auto-open.
This option is ignored when creating an image by converting.