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#!/bin/bash |
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# mkboot: make the system bootable |
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# Debian GNU/Linux |
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# Copyright 1996-1997 Guy Maor <maor@debian.org> |
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# This is free software; see the GNU General Public License version 2 |
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# or later for copying conditions. There is NO warranty. |
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PATH=$PATH:/sbin:/usr/sbin |
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# root partition |
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rootpart=$(rdev | cut -d ' ' -f 1) |
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# temporary directory |
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tmpdir=${TMPDIR-/tmp} |
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# check whether GRUB is installed |
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grubcheck () { |
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[ $(dpkg -s grub | grep -i ^status: | cut -d ' ' -f 4) = "installed" ] |
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} |
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# check whether LILO is installed |
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lilocheck () { |
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echo -en "\nChecking for LILO..." |
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if [ $(whoami) != root ] ; then |
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echo "Only root can check for LILO" |
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return 1; |
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fi |
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if [ ! -f /etc/lilo.conf -o ! -x /sbin/lilo ] ; then |
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echo "No" |
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return 1; |
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fi |
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bootpart=$(perl -ne 'print $1 if /^\s*boot\s*=\s*(\S*)/' /etc/lilo.conf) |
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if [ -z "$bootpart" ] ; then |
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# lilo defaults to current root when 'boot=' is not present |
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bootpart=$rootpart |
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fi |
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if ! dd if=$bootpart ibs=16 count=1 2>&- | grep -q LILO ; then |
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echo -e "\nYes, but I couldn't find a LILO signature on $bootpart" |
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echo "Check your /etc/lilo.conf, or run /sbin/lilo by hand." |
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return 1; |
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fi |
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echo "Yes, on $bootpart" |
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return 0; |
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} |
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# make a lilo boot disk |
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makelilo () { |
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( |
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b=$tmpdir/boot$$ |
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trap "set +e; cd /; umount /dev/fd0; rmdir $b" 0 |
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set -ex |
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mkdir $b |
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mke2fs -q /dev/fd0 |
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mount -t ext2 /dev/fd0 $b |
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if [ -e /boot/boot.b ]; then |
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cp /boot/boot.b $b/boot.b |
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fi |
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cp $1 $b/vmlinuz |
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cd $b |
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cat > lilo.conf <<- EOF |
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lba32 |
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boot = /dev/fd0 |
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install = boot.b |
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map = map |
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compact |
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prompt |
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timeout = 50 |
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read-only |
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image = vmlinuz |
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label = linux |
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root = $rootpart |
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EOF |
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lilo -C lilo.conf |
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) |
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} |
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# make a simple boot disk |
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makesimple () { |
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( |
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set -ex |
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dd if=$1 of=/dev/fd0 |
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rdev /dev/fd0 $rootpart |
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rdev -R /dev/fd0 1 |
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) |
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} |
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# make a boot disk |
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makedisk () { |
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kernel=${1:-/vmlinuz} |
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if [ ! -r $kernel ] ; then |
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echo "Error: Can't read $kernel." |
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exit 1 |
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fi |
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boottype="lilo" |
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if [ $(whoami) != root ] ; then |
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echo "Since you don't have root permissions, I can't put LILO on the diskette." |
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echo "I will make a non-LILO diskette instead, but it won't be as useful. You" |
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echo "can hit <Ctrl-C> to cancel." |
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boottype="simple" |
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fi |
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echo -en "\nInsert a floppy diskette into your boot drive, and press <Return>. " |
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read input |
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diskok=0 |
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while [ "$diskok" != 1 ] ; do |
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echo -e "\nCreating a $boottype bootdisk..." |
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make$boottype $kernel |
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if [ $? -eq 0 ] ; then |
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diskok=1 |
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else |
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echo -e "\nThere was a problem creating the boot diskette. Please make sure that" |
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echo "you inserted the diskette into the correct drive and that the diskette" |
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echo "is not write-protected." |
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echo -en "\nWould you like to try again? (y/n) " |
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read input |
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if [ "$input" != "y" ] ; then |
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return 1 |
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fi |
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fi |
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done |
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echo "...Success." |
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return 0 |
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} |
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usage="$0 [-r rootpartition] [-i] [kernel]" |
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while getopts "r:ih-" opt ; do |
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case "$opt" in |
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r) rootpart="$OPTARG" ;; |
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i) installkernel=1 ;; |
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h) echo $usage ; exit 0 ;; |
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-) break ;; |
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*) echo $usage 1>&2 ; exit 1 ;; |
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esac |
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done |
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shift $(($OPTIND - 1)) |
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if [ "$installkernel" ] ; then |
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shift |
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echo "In order to use the new kernel image you have just installed, you" |
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echo "will need to reboot the machine. First, however, you will need to" |
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echo "either make a bootable floppy diskette, re-run LILO, or have GRUB" |
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echo "installed." |
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grubcheck |
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if [ $? -eq 0 ] ; then |
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echo -e "\nGRUB is installed. To automatically switch to new kernels, point your" |
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echo "default entry in menu.lst to $1" |
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exit 0 |
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fi |
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lilocheck |
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if [ $? -eq 0 ] ; then |
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echo -en "\nShould I run /sbin/lilo? (y/n) " |
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read input |
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if [ "$input" = "y" ] ; then |
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/sbin/lilo && exit 0 |
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echo "There was a problem running /sbin/lilo." |
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fi |
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fi |
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echo -en "\nShould I make a bootdisk? (y/n) " |
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read input |
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if [ "$input" = "y" ] ; then |
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makedisk $1 && exit 0 |
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fi |
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echo -e "\nWARNING: Your system is probably unbootable now. After correcting any" |
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echo "problems, rerun this script with the command \`mkboot -installkernel'." |
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exit 1 |
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fi |
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makedisk $1 |
