How to configure Time Machine

[simteq]

I have an iMac with 10.6, there is one external drive that Time Machine uses as backup and there is another external drive, how can I configure Time Machine to backup both my Internal drive and the second external drive

 

[Hellhammer]

I think TM can't do it but Carbon Copy Cloner can!

 

[spinnerlys]

TM can backup external HDDs if you haven't excluded it in System Preferences > Time Machine > Options.

Or am I remembering incorrectly? I always had to exclude external HDDs when I used TM.

 

[simteq]

Thanks, TM options was Excluding my extra hard drive

TM Options was set to exclude my extra external HD

 

[Eric S.]

This is, in fact, how I back up my iBook G4 (which is running 10.4.11, and therefore can't use TM). I connect it to my desktop system in Firewire target disk mode.