grub-gfx/install-grub

   1 #!/bin/bash
   2
   3 #
   4 # This is a little helper script that tries to convert linux-style device
   5 # names to grub-style.  It's not very smart, so it
   6 # probably won't work for more complicated setups.
   7 #
   8 # If it doesn't work for you, try installing grub manually:
   9 #
  10 #    # mkdir -p /boot/grub
  11 #    # cp /usr/lib/grub/i386-pc/* /boot/grub/
  12 #
  13 # Then start up the 'grub' shell and run something like the following:
  14 #
  15 #    grub> root(hd0,0)
  16 #    grub> setup(hd0)
  17 #
  18 # The "root" line should point to the partition your kernel is located on,
  19 # /boot if you have a separate boot partition, otherwise your root (/).
  20 #
  21 # The "setup" line tells grub which disc/partition to install the
  22 # bootloader to.  In the example above, it will install to the MBR of the
  23 # primary master hard drive.
  24 #
  25
  26 usage() {
  27         echo "usage: install-grub <install_device> [boot_device]"
  28         echo
  29         echo "where <install_device> is the device where Grub will be installed"
  30         echo "and [boot_device] is the partition that contains the /boot"
  31         echo "directory (auto-detected if omitted)"
  32         echo
  33         echo "examples: install-grub /dev/hda"
  34         echo "          install-grub /dev/hda /dev/hda1"
  35         echo
  36         exit 0
  37 }
  38
  39 ## new install-grub, code was taken from setup script
  40 ROOTDEV=$1
  41 PART_ROOT=$2
  42 VMLINUZ=vmlinuz26
  43
  44 if [ "$ROOTDEV" = "" ]; then
  45         usage
  46 fi
  47 if [ "$PART_ROOT" = "" ]; then
  48         PART_ROOT=$(mount | grep "on /boot type" | cut -d' ' -f 1)
  49 fi
  50 if [ "$PART_ROOT" = "" ]; then
  51         PART_ROOT=$(mount | grep "on / type" | cut -d' ' -f 1)
  52 fi
  53 if [ "$PART_ROOT" = "" ]; then
  54         echo "error: could not determine BOOT_DEVICE, please specify manually" >&2
  55         exit 1
  56 fi
  57
  58
  59 get_grub_map() {
  60         [ -e /tmp/dev.map ]  && rm /tmp/dev.map
  61         /sbin/grub --no-floppy --device-map /tmp/dev.map >/tmp/grub.log 2>&1 <<EOF
  62 quit
  63 EOF
  64 }
  65
  66 mapdev() {
  67         partition_flag=0
  68         device_found=0
  69         devs=$(cat /tmp/dev.map | grep -v fd | sed 's/ *\t/ /' | sed ':a;$!N;$!ba;s/\n/ /g')
  70         linuxdevice=$(echo $1 | cut -b1-8)
  71         if [ "$(echo $1 | egrep '[0-9]$')" ]; then
  72                 # /dev/hdXY
  73                 pnum=$(echo $1 | cut -b9-)
  74                 pnum=$(($pnum-1))
  75                 partition_flag=1
  76         fi
  77         for  dev in $devs
  78         do
  79             if [ "(" = $(echo $dev | cut -b1) ]; then
  80                 grubdevice="$dev"
  81             else
  82                 if [ "$dev" = "$linuxdevice" ]; then
  83                         device_found=1
  84                         break
  85                 fi
  86            fi
  87         done
  88         if [ "$device_found" = "1" ]; then
  89                 if [ "$partition_flag" = "0" ]; then
  90                         echo "$grubdevice"
  91                 else
  92                         grubdevice_stringlen=${#grubdevice}
  93                         let grubdevice_stringlen--
  94                         grubdevice=$(echo $grubdevice | cut -b1-$grubdevice_stringlen)
  95                         echo "$grubdevice,$pnum)"
  96                 fi
  97         else
  98                 echo " DEVICE NOT FOUND"
  99         fi
 100 }
 101
 102 dogrub() {
 103         get_grub_map
 104         if [ ! -f /boot/grub/menu.lst ]; then
 105                 echo "Error: Couldn't find /boot/grub/menu.lst.  Is GRUB installed?"
 106                 exit 1
 107         fi
 108         # try to auto-configure GRUB...
 109         if [ "$PART_ROOT" != "" -a "$S_GRUB" != "1" ]; then
 110                 grubdev=$(mapdev $PART_ROOT)
 111                 # look for a separately-mounted /boot partition
 112                 bootdev=$(mount | grep /boot | cut -d' ' -f 1)
 113                 if [ "$grubdev" != "" -o "$bootdev" != "" ]; then
 114                         cp /boot/grub/menu.lst /tmp/.menu.lst
 115                         # remove the default entries by truncating the file at our little tag (#-*)
 116                         head -n $(cat /tmp/.menu.lst | grep -n '#-\*' | cut -d: -f 1) /tmp/.menu.lst >/boot/grub/menu.lst
 117                         rm -f /tmp/.menu.lst
 118                         echo "" >>/boot/grub/menu.lst
 119                         echo "# (0) Arch Linux" >>/boot/grub/menu.lst
 120                         echo "title  Arch Linux" >>/boot/grub/menu.lst
 121                         subdir=
 122                         if [ "$bootdev" != "" ]; then
 123                                 grubdev=$(mapdev $bootdev)
 124                         else
 125                                 subdir="/boot"
 126                         fi
 127                         echo "root   $grubdev" >>/boot/grub/menu.lst
 128                         echo "kernel $subdir/$VMLINUZ root=$PART_ROOT ro" >>/boot/grub/menu.lst
 129                         if [ "$VMLINUZ" = "vmlinuz26" ]; then
 130                                 echo "initrd $subdir/kernel26.img" >>/boot/grub/menu.lst
 131                         fi
 132                         echo "" >>/boot/grub/menu.lst
 133                         # adding fallback/full image
 134                         echo "# (1) Arch Linux" >>/boot/grub/menu.lst
 135                         echo "title  Arch Linux Fallback" >>/boot/grub/menu.lst
 136                         echo "root   $grubdev" >>/boot/grub/menu.lst
 137                         echo "kernel $subdir/$VMLINUZ root=$PART_ROOT ro" >>/boot/grub/menu.lst
 138                         if [ "$VMLINUZ" = "vmlinuz26" ]; then
 139                                 echo "initrd $subdir/kernel26-fallback.img" >>/boot/grub/menu.lst
 140                         fi
 141                         echo "" >>/boot/grub/menu.lst
 142                 fi
 143         fi
 144
 145         echo "Installing the GRUB bootloader..."
 146         cp -a /usr/lib/grub/i386-pc/* /boot/grub/
 147         sync
 148         # freeze xfs filesystems to enable grub installation on xfs filesystems
 149         if [ -x /usr/sbin/xfs_freeze ]; then
 150                 /usr/sbin/xfs_freeze -f /boot > /dev/null 2>&1
 151                 /usr/sbin/xfs_freeze -f / > /dev/null 2>&1
 152         fi
 153         # look for a separately-mounted /boot partition
 154         bootpart=$(mount | grep /boot | cut -d' ' -f 1)
 155         if [ "$bootpart" = "" ]; then
 156                         bootpart=$PART_ROOT
 157         fi
 158         bootpart=$(mapdev $bootpart)
 159         bootdev=$(mapdev $ROOTDEV)
 160         if [ "$bootpart" = "" ]; then
 161                 echo "Error: Missing/Invalid root device: $bootpart"
 162                 exit 1
 163         fi
 164         /sbin/grub --no-floppy --batch >/tmp/grub.log 2>&1 <<EOF
 165 root $bootpart
 166 setup $bootdev
 167 quit
 168 EOF
 169 cat /tmp/grub.log
 170         # unfreeze xfs filesystems
 171         if [ -x /usr/sbin/xfs_freeze ]; then
 172                 /usr/sbin/xfs_freeze -u /boot > /dev/null 2>&1
 173                 /usr/sbin/xfs_freeze -u / > /dev/null 2>&1
 174         fi
 175
 176         if grep "Error [0-9]*: " /tmp/grub.log >/dev/null; then
 177                 echo "Error installing GRUB. (see /tmp/grub.log for output)"
 178                 exit 1
 179         fi
 180         echo "GRUB was successfully installed."
 181
 182 rm -f /tmp/grub.log
 183
 184 exit 0
 185 }
 186
 187 dogrub