##Creating the DMG file
#Disk Utility
Type Disk Utility into Spotlite CMD+SPACEBAR from Finder
or
From Terminal:
open /Applications/Utilities/Disk\ Utility.app/
File -> New -> Disk Image from Folder
or
CMD+SHIFT+N
Select the folder myapp.app/ when prompted then click Image
In the Save As field enter a name for the file like myapp.dmg
From the Image Format drop-down select read/write
Click Save
#Edit Folder Preferences Mount the dmg and open it by double-clicking the file in Finder or From Terminal: open myapp.dmg open /Volumes/myapp/
Create a link/shortcut to /Applications folder by right-clicking
on the Applications folder and selecting Make Alias then drag it into
the dmg folder.
or
From Terminal:
cd /Volumes/myapp/
ln -s /Applications Applications
In Finder press CMD+1 to switch to icon view
Arrange icons as needed
Press CMD+J to show the View Options window
Adjust view settings as needed
From Background: section choose Picture
Drag and drop the image you want to use as the
background where it says Drag image here
Unmount/Eject the dmg when finished with View Options
or
From Terminal:
umount /Volumes/myapp/
#Compress and convert to Read-only
From Disk Utility right-click on myapp.dmg disk image and
select Convert "myapp.dmg"
In the Save As field enter a new name for the file like myappfinal.dmg
From the Image Formate drop-down select read-only
Click Save
From Terminal:
hdiutil convert -format UDZO -o myappfinal.dmg myapp.dmg
Congratulations you are finished! Mount the new dmg to verify it is working properly.