Drives that go 'poof' in the night
While revving up a new MacBook Pro and pondering how to get a persistent bootloader, I inadvertently did something dumb: I disconnected a Firewire drive from my laptop while it was at the EFI boot screen. As sometimes is the case, dumbness led to knowledge -- I had never seen the drive 'poof' effect on the startup chooser screen, and I have to say I was pleased at the little 'slide' as the remaining drives shifted over to take up the space. Nice fit and finish there.
