Depending on what you put in the image, you might also need to move the shortcut to the Applications folder around to fit the new background image.ĭrag your. After you've done this, you might need to unmount the device and remount it by opening the DMG file to see the changes. To do so, open the file /Volumes/ (whatever you called the device in step 3)/.image/image.png in an image editor and edit it to whatever you want.

You might want to change the background image (which contains the background color and the arrow). In that dialog, press Cmd+ Shift+ G and type /Volumes/ (whatever you called the device in step 3)/.image and select image.png.Įverything here except the shortcut to the Applications folder is just a background image. Click on that square and an Open dialog will open. On the bottom of that window, there is a square with the label 'Drag image here'. If everything is white except the shortcut to the Applications folder, press Cmd+ J and a window will be opened. Rename it to the name that you want (you probably want to give it the same name as your program). A device on the desktop named Untitled should appear.

Double-click on the DMG file to mount it.

You will get a window to open a file, open the empty DMG file. Then click on 'Images' in the menu bar and choose 'Resize.'. To do this, open the disk utility (if you don't know how to do this, search for disk utility in Launchpad).

Resize the DMG file to the appropriate size (the appropriate size is usually its current size plus the size of your.

Download and unzip this empty DMG file (I'm the one who created and uploaded it).

How to create image mac os x dmg file