22.10.2010 15:06 Uhr, Quelle: The Unofficial Apple Weblog

Mac 101: What's happening when your Mac is starting up?

Recently, in the interest of sleeping soundly through the night, I've been turning off my 27" iMac every night. No, I'm not doing this for energy conservation, but the darned thing used to light up at random intervals in the middle of the night. Since I now have to power up the iMac every morning, I see the bootup process regularly. You know how it goes. First you hear the startup chime, then you see that gray screen, then the gray screen with the Apple logo and spinning gear on it, then a light blue screen, and finally a login window or the desktop appears. What's actually going on while all of this is showing up on your screen? Well, as those of us who have gone through the training and tests to become Apple Certified Support Professionals are aware, each of those visual cues is an indication that a milestone in the bootup process has been re

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