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