I cannot make my computer (10.3.8) boot into safe mode, even tho it says that is what it is doing. I have tried restarts, log-outs, even turning the computer off for an hour, but no matter how long or how little I hold down the Shift key, the only thing that gets turned off is the Airport connection. Please embarrass me; tell me what I should be doing. Or can I do a manual work-around thru Activity Monitor? After I read the manual, I had hoped the SD backup would be a snap, but right now I'm what's snapping.