132 lines
5.6 KiB
Groff
132 lines
5.6 KiB
Groff
LILO: QUICK START GUIDE/FAQ
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A Fun Guide by Matt Welsh (mdw@tc.cornell.edu)
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Thanks a lot to makis@helios.unl.edu.
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Last modified 22 Jan 1993
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Version: 1.1
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I see lots of people who are having problems getting LILO set up on their
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system. Basically, LILO will let you boot MS-DOS, Linux, or whatever you
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want on different partitions on your drive, and let you choose at bootup
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time what partition to boot. But, LILO does *much* more than just this,
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and that's why the docs are rather long and detailed. I think what a lot
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of people use for LILO for is chooing between something like MS-DOS and
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Linux at bootup time on their hard drives. So, here's a "quick start" guide
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to give you the scoop on how to do this with LILO.
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You need the most recent version of LILO (version 8), and a kernel that's
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at least 0.97.pl2. You can get LILO.8 on tsx-11 or Sunsite, they're pretty
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easy to find. I don't know what version of LILO is on the current SLS
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release.
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The LILO.8 package contains the sources only. You need to do a 'make' to
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compile the programs and a 'make install' to copy LILO to the directory
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/etc/lilo on your system.
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LILO.8 also contains a "quick start" script which may help you out. I haven't
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seen it. :)
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You need to create the following files in /etc/lilo:
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- config (tells LILO how to set up your boot record)
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- disktab (tells LILO about the physical partitions that
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you're booting...ONLY NEEDED for scsi drives)
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- install (runs LILO on the 'config' program)
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In the file /etc/lilo/config, you have stanzas for each partition that you
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want to boot, giving the partition name, the file to boot from, and so on.
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At the top of the config files you specify the drive to boot, the map file
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and boot file to use (which should be /etc/lilo/map and /etc/lilo/boot.b,
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respectively), and other global options.
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Here's what my /etc/lilo/config files looks like. The notes after '#'
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are comments.
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-------------------------------------------------------------------------------
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# Tell LILO to set the boot record on the drive /dev/hda. If you boot
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# from a drive other than /dev/hda, set it here instead.
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boot = /dev/hda
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# Tell LILO to perform some optimization.
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compact
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# Tell LILO to use the boot file /etc/lilo/boot.b. Unless you're hacking
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# things heavily this is the only boot file you want to use.
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install = /etc/lilo/boot.b
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# Tell LILO to use the map file /etc/lilo/map. The map file tells LILO where
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# to look for partitions, and it's updated when you run LILO. You can give
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# any name you want here, but /etc/lilo/map is the canonical name.
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map = /etc/lilo/map
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# This stanza tells LILO to boot the file /Image on /dev/hda2, using the label
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# 'linux'. Since it's the first boot entry here, it's also the default.
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image = /Image
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label = linux
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root = /dev/hda2
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# This stanza is for an 'old' kernel image in the file /Image.old, on
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# /dev/hda2. This is for backup purposes... if you build a new kernel and
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# it won't boot for some reason, you can copy your old kernel to /Image.old
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# and boot from it.
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image = /Image.old
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label = linux-old
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root = /dev/hda2
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# This stanza is for booting MS-DOS from /dev/hda1.
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other = /dev/hda1 # this is for the msdos partition
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table = /dev/hda
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label = msdos
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-------------------------------------------------------------------------------
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This is the file /etc/lilo/install. You run this to install LILO (not the
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same thing as doing a 'make install', which only copies the LILO software to
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/etc/lilo).
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-------------------------------------------------------------------------------
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#!/bin/sh
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/etc/lilo/lilo -C /etc/lilo/config $@
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-------------------------------------------------------------------------------
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And here's the file /etc/lilo/disktab, where you put an entry for each
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SCSI partition and drive you plan to boot (such as /dev/sda, /dev/sda1, and
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/dev/sda2). You only need entries for SCSI drives because their geometries
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aren't in the CMOS. You don't need the disktab file at all for floppies or
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IDE drives.
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The device numbers are 0x800, 0x801, and so on. The sec/track and other
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information is given by your machine's CMOS (and fdisk may be able to give it
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to you as well, if you don't remember it offhand). The partition offset if
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given by Linux at bootup time.
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Note that you only need to describe partitions in this table that you plan
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to boot from. Also, you don't need any entries for floppies if you use LILO
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to boot from floppy, or for IDE drives.
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See the full LILO docs to figure out what you should put in this table!
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I don't have SCSI drives so this is just an example.
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-------------------------------------------------------------------------------
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# Dev. BIOS Secs/ Heads/ Cylin- Part.
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# num. code track cylin. ders offset
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0x800 0x80 17 10 980 0 # /dev/sda
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0x801 0x80 17 10 980 17 # /dev/sda1
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0x802 0x80 17 10 980 23630 # /dev/sda2
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-------------------------------------------------------------------------------
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This works for me, but I don't guarantee it will work for you. If you've done
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everything right running /etc/lilo/install should install LILO and Voila!
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you can boot from your hard drive. LILO will boot by default the first
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partition given in the config file; if you hold down shift, capslock, or
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control at boot time LILO will ask you what partition you want to boot (by
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name, such as "linux", "old-linux", and so on). There are MANY other options
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and things you can do in the config file; this is just a basic setup.
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Werner's put a lot of work into this program, and it shows... this quickie
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doc should get you started. NOW go back and read the full LILO documentation
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to make sure you understand everything, keeping the above in mind.
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Good luck!
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mdw
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