External Hard drive and Super Duper

[forthebrave]

I want to clone my HD to my external HD but I still have stuff on my ex. HD. Will using CCC or Super Duper erase everything already on my Ex. HD???

[SilentPanda]

What I did was make an empty disk image on my external HD using Disk Utility. Then I mounted that empty disk image. I backed up my drive to the disk image. Works just fine.

[evilernie]

SD or CCC will erase your external drive before cloning. If you can fit everything from the external onto the internal, then you can safely wipe out the external and clone.

Edit: Or do what he said. That's a great idea! :D

[kugino]

What I did was make an empty disk image on my external HD using Disk Utility. Then I mounted that empty disk image. I backed up my drive to the disk image. Works just fine.

brilliant!