I would never opened a topic like this if I had not a similar experience with expanding 'dmg' in the past! A truly bad experience! It is supposed that using 'disk utility' I can resize-expand-make bigger any dmg file. Every time I tried it, it was a totally fail process. The 'disk image' dmg did not resized at all. I do not know why, it just happened to me many times. Does anyone had similar experience? Any solution to this? So if I have a dmg that need to be bigger, I create a new one from scratch and I copy paste files from the old dmg... I need to do the same with hard disk partitions, using disk utility once again. I need to resize my hard disk partitions. Does this process works well as it should be, or it is a bad-implemented feature? Will it be a trouble-free procedure or it is common to mac users to face problems with it? I had the similar bad experience with dmg's, so I am suspicious now.