| Key |
What it does |
| C |
boot from optical drive drive (CD or DVD) drive |
| N |
boot from NetBoot image |
| T |
target disk mode, computer acts as a firewire hard drive and can be connected to another computer, allowing you to run diagnostics |
| X |
“X-Ray” key (resets startup disk selection) |
| Command-S |
Single User mode |
| Command-V |
Verbose Mode |
| Shift |
safe boot mode |
| Option key |
boot choice mode (also known as boot into open firmware), displays available boot hard drives and give you a choice of which one to boot from |
| Cmd-Option-O-F |
open firmware mode, lets you see what the current firmware is |
| Cmd-Option-P-R |
reset parameter RAM |
| Cmd-Option-Shift-Delete |
bypass internal hard drive |
| Mouse button |
eject removable media |
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