How has my startup disk changed?

[ascender]

I was looking at the "About This Mac" info and noticed that my startup disk has changed. Instead of it being the internal HDD, it seems to be booting from a backup volume created by Super Duper which is stored on an external firewire disk.

How can this have happened when I've not done anything?

And more importantly, what's the easiest way to swap it back without losing any data?

Thanks,


Mike

 

[iBookG4user]

Try going to System Preferences>Startup Disk and selecting your internal hard drive, then click restart.

 

[ascender]

Try going to System Preferences>Startup Disk and selecting your internal hard drive, then click restart.

That's fine, I know how to do that, but I'll then have to try and find what files have changed since i last booted from the internal HDD. Also, what's to stop it happening again?

 

[iBookG4user]

What I usually do for backups is make a bootable backup on its own external hard drive and I don't use the hard drive for anything else. I also use carbon copy cloner, that system works for me and it would prevent that from happening.