O.K., riddle me this, though.
I have a Mac Pro, with a Time-machine backup drive in one of my extra internal slots, and a week-and-a-half old SSD boot drive.
And the SSD boot drive just gave up the ghostit seems, anyway. I had to finally take the Mac Pro into an Apple Repair place, and they eventually got it to launch, but told me to get it replaced asap. Fine. I'm not in full-panic because I was able to get it to launch myself, when I got the machine home, and I did a new Time-Machine backup to the internal drive reserved for this.
But here's what has me spooked. When my Mac Pro wouldn't start, it simply wouldn't start. I tried starting holding this or that key down, hoping to at least be given the opportunity of starting from my most recent Time-Machine backup, but I couldn't get anything to come up on my desktop.
This is probably due to my own ineptitude, I realize.
But it made me wonder whether an external (fw, for example) backup, launcheable drive might not be an even better idea than in internal one.
regards,
malch