Use the following questions to review what you have learned:
1:
What do one beep, two beeps, three beeps, four beeps, and five beeps at startup signify?
2:
List the possible scenarios that may occur during the BootX sequence.
3:
Describe what happens during the Kernel Load stage.
4:
What is the major difference between a startup item and a launchd item?
5:
State three tasks that loginwindow performs after a user has logged in.
6:
Identify the six visual or auditory cues that are displayed during the Mac OS X boot process.
Answers
A1:
One beep: no RAM installed; two beeps: incompatible RAM types; three beeps: no good memory banks; four beeps: no good boot images in BootROM; five beeps: processor is not usable.
A2:
Kernel found
System not found
Network boot
No startup disk found
A3:
Loads device drivers, initializes I/O Kit, loads and starts launchd.
A4:
Startup items are always started during the startup process whether they will be used or not. A launchd item ideally is only launched when needed.
A5:
Loads the user's computing environment; launches the Dock, Finder, and SystemUIServer; and automatically launches applications specified in the Login Items pane of Accounts preferences.
A6:
Black screen, start-up chime, gray screen, gray screen with Apple logo and spinning gear, blue screen, login window.
