I have heard of some 'Acronis True Image' that is similar to Ghost, maybe it can do the trick. or look for something similar on: [color=ffff00]Hiren's boot CD[/color]
BTW, there seems to be an Amiga version of dd, too, on Aminet (two of them, one is called dd and the other dcp). Has anyone tried that first one (also with >4Gb)?
I used dcp and it seems nice, at least with small disks.
