What have I done wrong?

[Tricia Henwood]

Many thanks for your response, Dave. I wasn't planning to make any changes to the PowerBook but to simply have it 'mirror' the desktop system on a, say, weekly basis.

Yes, you're right - it really is only the Documents folder that needs to be backed up.
I am assuming that I will still be able to back up to my external firewire drive as well as to the PowerBook, but maybe the assumption is incorrect?

This morning I again connected the Mac mini to the powerbook by firewire and then ran SuperDuper.

At first I thought my problem might be caused by the fact that both hard drives were called 'Macintosh HD' so I renamed the PowerBook hard drive Macintosh HD 1, shut it down and re-booted then re-connected the firewire cable and started SD! Still no luck, I'm afraid. It allows me to choose Macintosh HD as the drive that I want to back up but the only options I'm given under the drive to back up to are Macintosh HD (which is greyed out) or Disk Image...

I'm sure it's something very simple that I'm missing here but, nonetheless, I am missing whatever it is.

Thanks again for your help.