205 lines
5.9 KiB
Bash
Executable File
205 lines
5.9 KiB
Bash
Executable File
#!/bin/bash
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#
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# This is a little helper script that tries to convert linux-style device
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# names to grub-style. It's not very smart, so it
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# probably won't work for more complicated setups.
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#
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# If it doesn't work for you, try installing grub manually:
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#
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# # mkdir -p /boot/grub
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# # cp /usr/lib/grub/i386-pc/* /boot/grub/
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#
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# Then start up the 'grub' shell and run something like the following:
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#
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# grub> root (hd0,0)
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# grub> setup (hd0)
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#
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# The "root" line should point to the partition your kernel is located on,
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# /boot if you have a separate boot partition, otherwise your root (/).
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#
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# The "setup" line tells grub which disc/partition to install the
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# bootloader to. In the example above, it will install to the MBR of the
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# primary master hard drive.
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#
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usage() {
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echo "usage: install-grub <install_device> [boot_device]"
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echo
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echo "where <install_device> is the device where Grub will be installed"
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echo "and [boot_device] is the partition that contains the /boot"
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echo "directory (auto-detected if omitted)"
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echo
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echo "examples: install-grub /dev/hda"
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echo " install-grub /dev/hda /dev/hda1"
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echo
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exit 0
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}
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## new install-grub, code was taken from setup script
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ROOTDEV=${1}
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PART_ROOT=${2}
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if [ "${ROOTDEV}" = "" ]; then
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usage
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fi
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if [ "${PART_ROOT}" = "" ]; then
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PART_ROOT=$(mount | grep "on /boot type" | cut -d' ' -f 1)
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fi
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if [ "$PART_ROOT" = "" ]; then
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PART_ROOT=$(mount | grep "on / type" | cut -d' ' -f 1)
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fi
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if [ "${PART_ROOT}" = "" ]; then
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echo "error: could not determine BOOT_DEVICE, please specify manually" >&2
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exit 1
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fi
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get_grub_map() {
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[ -e /tmp/dev.map ] && rm /tmp/dev.map
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/sbin/grub --no-floppy --device-map /tmp/dev.map >/tmp/grub.log 2>&1 <<EOF
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quit
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EOF
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}
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mapdev() {
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partition_flag=0
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device_found=0
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devs=$(cat /tmp/dev.map | grep -v fd | sed 's/ *\t/ /' | sed ':a;$!N;$!ba;s/\n/ /g')
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linuxdevice=$(echo $1 | cut -b1-8)
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if [ "$(echo ${1} | egrep '[0-9]$')" ]; then
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# /dev/hdXY
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pnum=$(echo ${1} | cut -b9-)
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pnum=$((${pnum}-1))
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partition_flag=1
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fi
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for dev in ${devs}; do
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if [ "(" = $(echo ${dev} | cut -b1) ]; then
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grubdevice="${dev}"
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else
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if [ "${dev}" = "${linuxdevice}" ]; then
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device_found=1
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break
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fi
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fi
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done
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if [ "${device_found}" = "1" ]; then
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if [ "${partition_flag}" = "0" ]; then
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echo "${grubdevice}"
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else
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grubdevice_stringlen=${#grubdevice}
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let grubdevice_stringlen--
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grubdevice=$(echo $grubdevice | cut -b1-$grubdevice_stringlen)
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echo "${grubdevice},${pnum})"
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fi
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else
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echo " DEVICE NOT FOUND"
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fi
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}
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dogrub() {
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get_grub_map
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if [ ! -f /boot/grub/menu.lst ]; then
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echo "Error: Couldn't find /boot/grub/menu.lst. Is GRUB installed?"
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exit 1
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fi
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# try to auto-configure GRUB...
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if [ "${PART_ROOT}" != "" -a "$S_GRUB" != "1" ]; then
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grubdev=$(mapdev ${PART_ROOT})
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# look for a separately-mounted /boot partition
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bootdev=$(mount | grep /boot | cut -d' ' -f 1)
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if [ "${grubdev}" != "" -o "${bootdev}" != "" ]; then
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cp /boot/grub/menu.lst /tmp/.menu.lst
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# remove the default entries by truncating the file at our little tag (#-*)
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head -n $(cat /tmp/.menu.lst | grep -n '#-\*' | cut -d: -f 1) /tmp/.menu.lst >/boot/grub/menu.lst
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rm -f /tmp/.menu.lst
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for kernel in /boot/vmlinuz-linux* /boot/vmlinuz26*; do
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if [ ${kernel} == "/boot/vmlinuz-linux*" ] || [ ${kernel} == "/boot/vmlinuz26*" ] ; then
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echo > /dev/null
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else
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VMLINUZ=$( echo ${kernel} | cut -c 7- )
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if [ "$( echo ${VMLINUZ} | cut -c -13 )" = vmlinuz-linux ]; then # new naming scheme for linux > 3.0
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extension=$( echo ${VMLINUZ} | cut -c 14- )
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INITRAMFS_BASENAME = initramfs-linux${extension}
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else # old naming scheme for lts kernel
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extension=$( echo ${VMLINUZ} | cut -c 10- )
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INITRAMFS_BASENAME=kernel26${extension}
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fi
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echo "" >>/boot/grub/menu.lst
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echo "# (0) Arch Linux" >>/boot/grub/menu.lst
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echo "title Arch Linux" >>/boot/grub/menu.lst
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subdir=
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if [ "${bootdev}" != "" ]; then
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grubdev=$(mapdev ${bootdev})
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else
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subdir="/boot"
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fi
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echo "root ${grubdev}" >>/boot/grub/menu.lst
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echo "kernel ${subdir}/${VMLINUZ} root=${PART_ROOT} ro" >>/boot/grub/menu.lst
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echo "initrd ${subdir}/${INITRAMFS_BASENAME}.img" >>/boot/grub/menu.lst
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echo "" >>/boot/grub/menu.lst
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# adding fallback/full image
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echo "# (1) Arch Linux" >>/boot/grub/menu.lst
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echo "title Arch Linux Fallback" >>/boot/grub/menu.lst
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echo "root ${grubdev}" >>/boot/grub/menu.lst
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echo "kernel ${subdir}/${VMLINUZ} root=${PART_ROOT} ro" >>/boot/grub/menu.lst
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echo "initrd ${subdir}/${INITRAMFS_BASENAME}-fallback.img" >>/boot/grub/menu.lst
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echo "" >>/boot/grub/menu.lst
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fi
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done
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fi
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fi
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echo "Installing the GRUB bootloader..."
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cp -a /usr/lib/grub/i386-pc/* /boot/grub/
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sync
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# freeze xfs filesystems to enable grub installation on xfs filesystems
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if [ -x /usr/sbin/xfs_freeze ]; then
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/usr/sbin/xfs_freeze -f /boot > /dev/null 2>&1
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/usr/sbin/xfs_freeze -f / > /dev/null 2>&1
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fi
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# look for a separately-mounted /boot partition
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bootpart=$(mount | grep /boot | cut -d' ' -f 1)
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if [ "${bootpart}" = "" ]; then
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bootpart=${PART_ROOT}
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fi
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bootpart=$(mapdev ${bootpart})
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bootdev=$(mapdev ${ROOTDEV})
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if [ "${bootpart}" = "" ]; then
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echo "Error: Missing/Invalid root device: ${bootpart}"
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exit 1
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fi
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echo ${bootpart}
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echo ${bootdev}
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/sbin/grub --no-floppy --batch >/tmp/grub.log 2>&1 <<EOF
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root ${bootpart}
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setup ${bootdev}
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quit
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EOF
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cat /tmp/grub.log
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# unfreeze xfs filesystems
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if [ -x /usr/sbin/xfs_freeze ]; then
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/usr/sbin/xfs_freeze -u /boot > /dev/null 2>&1
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/usr/sbin/xfs_freeze -u / > /dev/null 2>&1
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fi
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if grep "Error [0-9]*: " /tmp/grub.log >/dev/null; then
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echo "Error installing GRUB. (see /tmp/grub.log for output)"
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exit 1
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fi
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echo "GRUB was successfully installed."
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rm -f /tmp/grub.log
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exit 0
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}
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dogrub
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