mirror of https://github.com/mkerrisk/man-pages
bootparam.7: Remove mention of the deprecated rdev(8)
The deprecated rdev(8) command was removed from util-linux in 2010. See https://git.kernel.org/?p=utils/util-linux/util-linux.git;a=commit;h=a3e40c14651fccf18e7954f081e601389baefe3fO Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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.\" FIXME ? The use of quotes on this page is inconsistent with the
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.\" rest of man-pages.
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.\"
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.TH BOOTPARAM 7 2013-03-15 "Linux" "Linux Programmer's Manual"
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.TH BOOTPARAM 7 2013-06-08 "Linux" "Linux Programmer's Manual"
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.SH NAME
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bootparam \- introduction to boot time parameters of the Linux kernel
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.SH DESCRIPTION
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you have no opportunity to specify any parameters.
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So, in order to take advantage of this possibility you have to
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use software that is able to pass parameters, like LILO or loadlin.
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For a few parameters one can also modify the kernel image itself,
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using rdev; see
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.BR rdev (8)
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for further details.
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The LILO program (LInux LOader) written by Werner Almesberger is the
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most commonly used.
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.BR lilo.conf (5).)
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LILO can boot DOS, OS/2, Linux, FreeBSD, UnixWare, etc., and is quite flexible.
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The other commonly used Linux loader is 'LoadLin' which is a DOS
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The other commonly used Linux loader is 'LoadLin', which is a DOS
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program that has the capability to launch a Linux kernel from the DOS
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prompt (with boot-args) assuming that certain resources are available.
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This is good for people that want to launch Linux from DOS.
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To override this value, and
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select the second floppy drive as the root device, one would
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use 'root=/dev/fd1'.
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(The root device can also be set using
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.BR rdev (8).)
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The root device can be specified symbolically or numerically.
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A symbolic specification has the form /dev/XXYN, where XX designates
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The 'rw' option tells the kernel to mount the root file system read/write.
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This is the default.
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The choice between read-only and read/write can also be set using
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.BR rdev (8).
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.TP
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.B "'resume=...'"
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This tells the kernel the location of the suspend-to-disk data that you want the machine to resume from after hibernation.
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In Linux 1.3.48, ramdisk handling was changed drastically.
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Earlier, the memory was allocated statically, and there was
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a 'ramdisk=N' parameter to tell its size.
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(This could also
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be set in the kernel image at compile time, or by use of
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.BR rdev (8).)
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(This could also be set in the kernel image at compile time.)
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These days ram disks use the buffer cache, and grow dynamically.
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For a lot of information (e.g., how to use
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.BR rdev (8)
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in conjunction with the new ramdisk setup), see
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For a lot of information in conjunction with the new ramdisk
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setup), see
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.IR /usr/src/linux/Documentation/ramdisk.txt .
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There are four parameters, two boolean and two integral.
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.BR lilo.conf (5),
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.BR klogd (8),
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.BR lilo (8),
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.BR mount (8),
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.BR rdev (8)
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.BR mount (8)
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Large parts of this man page have been derived from the
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Boot Parameter HOWTO (version 1.0.1) written by Paul Gortmaker.
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