D is my first client to be using OS X and she loves it. This morning though for some reason she found her computer started up in OS 9 and she didn’t know why or how to get it back to OS X.
Well, I don’t know why either, but getting it back to X was simple: under OS 9 go to the Apple menu and get the Startup Disk Control Panel. That then displays a list of possible startup discs and clearly labels which ones are OS 9 and which are OS X. Just select the one you need and restart.