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Linux Boot Camp: How Linux Boots (part 1)

Mar 25, 2010, 17:03 (0 Talkback[s])
(Other stories by Akkana Peck)

"Booting. Sometimes it seems like it takes forever. What's the computer doing all that time? How do you find out?

"The Linux boot sequence is surprisingly simple, and the best part is that almost all of it is controlled by shell scripts you can read -- and even edit yourself.

"Today's tutorial will take you through boot camp, focusing on the classic "SysV init" methods Linux has always used. Part II will discoss some of the changes on systems like Ubuntu as they gradually migrate to a new "Upstart" model.

"First, Grub loads the kernel

"When you power your machine on, a program called grub takes control. It reads the first sector of your disk, figures out where to look for the operating system, and starts the kernel running. Then it gets out of the way and the kernel takes over: usually you'll see a brief message like "OK, loading the kernel"."

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