How do I copy between disks without having to wait to click on the error boxes?

I want to copy from one external hard disk to another. The content to copy is around 1 TB. Is there a way I can do this without sitting in front of the computer? The issue is that there are errors while copying and I have to click on boxes so that the transfer can continue. This prevents me from doing other things and I have to sit in front of the computer. I hope I am clear and you can help me.

Regards.

Edit: Just now, I am using rsync to copy the disks.

rsync -av '/media/kartikeys/My Passport/' '/media/kartikeys/MONK/My Passport/'

Earlier, I was copying and pasting as I usually do. The errors I'd get were about Duplicate Files, and about some file not being found. I would come back to the computer to find that unless I click the 'skip' button, for example, the copying stops.