How to avoid backup booting?

[frogtaco]

Originally Posted by dnanian

There's a limit, alas, of how much general Mac "tutorial" information I can provide around this kind of thing. Of course, to boot back to the internal drive, you would use the Startup Disk preference pane, so that would reset the setting...

That makes sense. I figured it out right away on my iMac because the Firewire drive is always attached. (And then I forgot all about it.)

On the MBP we weren't always remembering to connect the external drive after moving the computer, so when it restarted without the external one attached, it would boot from the internal disk, since the default one wasn't available. We restart so seldom that the issue was harder to track down.

Thanks again for your help!