I just upgraded our macs at work to 8 new Intel based G5′s with 30 inch Apple Cinema Displays. The displays are fantastic by the way. I have also found myself needing to remember the Apple/Macintosh boot keys again so here are some for reference. I’ll update this list as I come across new ones.

1. Command S = boot into single user mode
2. command V = boot using verbose mode (all messages)
3. X = Reset startup selection and boot into OS X server
4. Shift = Boot into Safe Mode (press as soon as mac is on and hold down)
5. option = boot into open firmware target disk mode
6. Command + Option + Shift + Delete = bypass internal hard drive on boot
7. T = boot into firewire target disk mode
8. C = Boot from CD or DVD drive
9. N = boot from network
10. Command + Option + P + R = reset PRAM
11. Hold Down Mouse button = Ejects any removable media

Bonus Commands After Boot is complete

1. Command + Shift + 3 = Full Screen Shot
2. Command + Shift + 4 = Adjustable Area Screen Shot