September 2002
Beginner to intermediate
216 pages
7h 43m
English
When the computer is powered up, the firmware is in complete control. After the firmware initializes the hardware, it hands off control to the BootX loader, which bootstraps the kernel. After a trip into Mach, the control bubbles up into the BSD subsystem, and eventually into the Aqua user interface.
By default, Mac OS X boots graphically. If you’d like to see console messages as you boot, hold down ⌘-V as you start the computer. To boot in single-user mode, hold down ⌘-S as you start the computer.