Книга: Fedora™ Unleashed, 2008 edition

Runtime Errors, Boot Loader Problems, and Kernel Oops

Runtime Errors, Boot Loader Problems, and Kernel Oops

Runtime errors occur as the kernel is loading. Error messages are displayed on the screen or written to the /var/log/messages file. Bootloader problems display messages to the screen; no log file is produced. Kernel oops are errors in a running kernel, and error messages are written to the /var/log/messages file.

Excellent documentation on the Internet exists for troubleshooting just about every type of error that LILO, GRUB, or the kernel could give during boot. The best way to find this documentation is to go to your favorite search engine and type in the keywords of the error you received. You will need to adjust the keywords you use as you focus your search.

In this category, the most common problems deal with LILO configuration issues. Diagnosis and solutions to these problems can be found in the LILO mini-HOWTO found on the Linux Documentation project's website at http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/htmLsingle/LILO.html.

If you have GRUB problems, the GRUB manual is online at http://www.gnu.org/software/grub/manual/.

TIP

For best results, go to http://www.google.com/linux to find all things Linux on the Internet. Google has specifically created a Linux area of its database, which should allow faster access to information on Linux than any other search engine. Usenet newsgroup postings are searchable at http://www.google.com/grphp. Mail list discussions can be searched in the Mailing listARChives (MARC) at http://marc.theaimsgroup.com/.

Relevant Fedora and Linux Commands

You will use the following commands when managing the kernel and its modules in Fedora:

gcc — The GNU compiler system

make — GNU project and file management command

mkbootdisk — Fedora's boot disk creation tool

sysctl — The interface to manipulating kernel variables at runtime

mkinitrd — Create a RAM-disk file system for bootloading support

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