|s i s t e m a o p e r a c i o n a l m a g n u x l i n u x||~/ · documentação · suporte · sobre|
The kernel has a limited capability to accept information at boot in the form of a `command line', similar to an argument list you would give to a program. In general this is used to supply the kernel with information about hardware parameters that the kernel would not be able to determine on its own, or to avoid/override the values that the kernel would otherwise detect.
However, if you just copy a kernel image directly to a floppy,
This present revision covers kernels up to and including v2.2.9. Some features that are unique to development/testing kernels up to v2.3.2 are also documented.
The BootPrompt-Howto is by:
This document is Copyright (c) 1995-1999 by Paul Gortmaker. Please see the Disclaimer and Copying information at the end of this document ( copyright) for information about redistribution of this document and the usual `we are not responsible for what you manage to break...' type legal stuff.
Most Linux users should never have to even look at this document. Linux does an exceptionally good job at detecting most hardware and picking reasonable default settings for most parameters. The information in this document is aimed at users who might want to change some of the default settings to optimize the kernel to their particular machine, or to a user who has `rolled their own' kernel to support a not so common piece of hardware for which automatic detection is currently not available.
IMPORTANT NOTE: Driver related boot prompt arguments
only apply to hardware drivers that are compiled directly into the
kernel. They have no effect on drivers that are loaded
as modules. Most Linux distributions come with a basic `bare-bones'
kernel, and the drivers are small modules that are loaded after
the kernel has initialized.
If you are unsure if you are using modules
then look at
The most up-to-date documentation will always be the kernel
source itself. Hold on! Don't get scared. You don't need to
know any programming to read the comments in the source files.
For example, if you were looking for what arguments could be
passed to the AHA1542 SCSI driver, then you would go to the
The next best thing will be any documentation files that are
distributed with the kernel itself. There are now quite a
few of these, and most of them can be found in the directory
If you have figured out what boot-args you intend to use, and now want to know how to get that information to the kernel, then look at the documentation that comes with the software that you use to boot the kernel (e.g. LILO or loadlin). A brief overview is given below, but it is no substitute for the documentation that comes with the booting software.
If you have questions about passing boot arguments to the kernel, please check this document first. If this and the related documentation mentioned above does not answer your question(s) then you can try the Linux newsgroups. General questions on how to configure your system should be directed to the comp.os.linux.setup newsgroup. We ask that you please respect this general guideline for content, and don't cross-post your request to other groups.
Of course you should try checking the group before blindly
posting your question, as it may even be a Frequently Asked
Question (a FAQ).
A quick browse of the Linux FAQ before posting is a good
idea. You should be able to find the FAQ somewhere close to
where you found this document. If it is not a FAQ then
use newsgroup archives, such as those
New versions of this document can be retrieved via anonymous
FTP from most Linux FTP sites in the directory
If you want to get the official copy, here is URL.
Next Previous Contents