Unable to persuade DropDMG to honour my selection for producing a custom volume icon.
(It’s not clear to me whether the checkbox “Custom volume icon” should be selected but I have tried with and without it selected and still no luck.)
I chose a .png file of a .png that is 512x512 and can confirm that a .Volumeicon.icns is produced and that it is correct in that the icon appears as expected.
Yet when the .dmg is produced it instead is displayed with the folder icon that is the main directory on the volume.
(I’m deploying a folder containing icons rather than a single App).
I’ve tried saving the .Volumeicon.icns into the source folder but still no luck.