diff options
Diffstat (limited to 'abs/core/grub/install-grub')
| -rwxr-xr-x | abs/core/grub/install-grub | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/abs/core/grub/install-grub b/abs/core/grub/install-grub new file mode 100755 index 0000000..3eb7ce5 --- /dev/null +++ b/abs/core/grub/install-grub @@ -0,0 +1,187 @@ +#!/bin/bash + +# +# This is a little helper script that tries to convert linux-style device +# names to grub-style. It's not very smart, so it +# probably won't work for more complicated setups. +# +# If it doesn't work for you, try installing grub manually: +# +# # mkdir -p /boot/grub +# # cp /usr/lib/grub/i386-pc/* /boot/grub/ +# +# Then start up the 'grub' shell and run something like the following: +# +# grub> root(hd0,0) +# grub> setup(hd0) +# +# The "root" line should point to the partition your kernel is located on, +# /boot if you have a separate boot partition, otherwise your root (/). +# +# The "setup" line tells grub which disc/partition to install the +# bootloader to. In the example above, it will install to the MBR of the +# primary master hard drive. +# + +usage() { + echo "usage: install-grub <install_device> [boot_device]" + echo + echo "where <install_device> is the device where Grub will be installed" + echo "and [boot_device] is the partition that contains the /boot" + echo "directory (auto-detected if omitted)" + echo + echo "examples: install-grub /dev/hda" + echo " install-grub /dev/hda /dev/hda1" + echo + exit 0 +} + +## new install-grub, code was taken from setup script +ROOTDEV=$1 +PART_ROOT=$2 +VMLINUZ=vmlinuz26 + +if [ "$ROOTDEV" = "" ]; then + usage +fi +if [ "$PART_ROOT" = "" ]; then + PART_ROOT=$(mount | grep "on /boot type" | cut -d' ' -f 1) +fi +if [ "$PART_ROOT" = "" ]; then + PART_ROOT=$(mount | grep "on / type" | cut -d' ' -f 1) +fi +if [ "$PART_ROOT" = "" ]; then + echo "error: could not determine BOOT_DEVICE, please specify manually" >&2 + exit 1 +fi + + +get_grub_map() { + [ -e /tmp/dev.map ] && rm /tmp/dev.map + /sbin/grub --no-floppy --device-map /tmp/dev.map >/tmp/grub.log 2>&1 <<EOF +quit +EOF +} + +mapdev() { + partition_flag=0 + device_found=0 + devs=$(cat /tmp/dev.map | grep -v fd | sed 's/ *\t/ /' | sed ':a;$!N;$!ba;s/\n/ /g') + linuxdevice=$(echo $1 | cut -b1-8) + if [ "$(echo $1 | egrep '[0-9]$')" ]; then + # /dev/hdXY + pnum=$(echo $1 | cut -b9-) + pnum=$(($pnum-1)) + partition_flag=1 + fi + for dev in $devs + do + if [ "(" = $(echo $dev | cut -b1) ]; then + grubdevice="$dev" + else + if [ "$dev" = "$linuxdevice" ]; then + device_found=1 + break + fi + fi + done + if [ "$device_found" = "1" ]; then + if [ "$partition_flag" = "0" ]; then + echo "$grubdevice" + else + grubdevice_stringlen=${#grubdevice} + let grubdevice_stringlen-- + grubdevice=$(echo $grubdevice | cut -b1-$grubdevice_stringlen) + echo "$grubdevice,$pnum)" + fi + else + echo " DEVICE NOT FOUND" + fi +} + +dogrub() { + get_grub_map + if [ ! -f /boot/grub/menu.lst ]; then + echo "Error: Couldn't find /boot/grub/menu.lst. Is GRUB installed?" + exit 1 + fi + # try to auto-configure GRUB... + if [ "$PART_ROOT" != "" -a "$S_GRUB" != "1" ]; then + grubdev=$(mapdev $PART_ROOT) + # look for a separately-mounted /boot partition + bootdev=$(mount | grep /boot | cut -d' ' -f 1) + if [ "$grubdev" != "" -o "$bootdev" != "" ]; then + cp /boot/grub/menu.lst /tmp/.menu.lst + # remove the default entries by truncating the file at our little tag (#-*) + head -n $(cat /tmp/.menu.lst | grep -n '#-\*' | cut -d: -f 1) /tmp/.menu.lst >/boot/grub/menu.lst + rm -f /tmp/.menu.lst + echo "" >>/boot/grub/menu.lst + echo "# (0) Arch Linux" >>/boot/grub/menu.lst + echo "title Arch Linux" >>/boot/grub/menu.lst + subdir= + if [ "$bootdev" != "" ]; then + grubdev=$(mapdev $bootdev) + else + subdir="/boot" + fi + echo "root $grubdev" >>/boot/grub/menu.lst + echo "kernel $subdir/$VMLINUZ root=$PART_ROOT ro" >>/boot/grub/menu.lst + if [ "$VMLINUZ" = "vmlinuz26" ]; then + echo "initrd $subdir/kernel26.img" >>/boot/grub/menu.lst + fi + echo "" >>/boot/grub/menu.lst + # adding fallback/full image + echo "# (1) Arch Linux" >>/boot/grub/menu.lst + echo "title Arch Linux Fallback" >>/boot/grub/menu.lst + echo "root $grubdev" >>/boot/grub/menu.lst + echo "kernel $subdir/$VMLINUZ root=$PART_ROOT ro" >>/boot/grub/menu.lst + if [ "$VMLINUZ" = "vmlinuz26" ]; then + echo "initrd $subdir/kernel26-fallback.img" >>/boot/grub/menu.lst + fi + echo "" >>/boot/grub/menu.lst + fi + fi + + echo "Installing the GRUB bootloader..." + cp -a /usr/lib/grub/i386-pc/* /boot/grub/ + sync + # freeze xfs filesystems to enable grub installation on xfs filesystems + if [ -x /usr/sbin/xfs_freeze ]; then + /usr/sbin/xfs_freeze -f /boot > /dev/null 2>&1 + /usr/sbin/xfs_freeze -f / > /dev/null 2>&1 + fi + # look for a separately-mounted /boot partition + bootpart=$(mount | grep /boot | cut -d' ' -f 1) + if [ "$bootpart" = "" ]; then + bootpart=$PART_ROOT + fi + bootpart=$(mapdev $bootpart) + bootdev=$(mapdev $ROOTDEV) + if [ "$bootpart" = "" ]; then + echo "Error: Missing/Invalid root device: $bootpart" + exit 1 + fi + /sbin/grub --no-floppy --batch >/tmp/grub.log 2>&1 <<EOF +root $bootpart +setup $bootdev +quit +EOF +cat /tmp/grub.log + # unfreeze xfs filesystems + if [ -x /usr/sbin/xfs_freeze ]; then + /usr/sbin/xfs_freeze -u /boot > /dev/null 2>&1 + /usr/sbin/xfs_freeze -u / > /dev/null 2>&1 + fi + + if grep "Error [0-9]*: " /tmp/grub.log >/dev/null; then + echo "Error installing GRUB. (see /tmp/grub.log for output)" + exit 1 + fi + echo "GRUB was successfully installed." + +rm -f /tmp/grub.log + +exit 0 +} + +dogrub
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