#!/bin/bash #: Title : findgrub #: Date Created: Wed Sep 29 20:02:40 CDT 2010 #: Last Edit : Mon Oct 11 00:45:27 PDT 2010 #: Author : please_try_again & edited by j McDaniel #: Version : 2.2b #: Description : Locates the Grub Boot Loader & Windows BootLoader, Creates Grub Menu.Lst Entries #: Options : -h | --help, -w | -- writemenu, -k | --kernel OR -d | --debug # Created for the openSUSE forums September 30th in the year 2010 with loving care and presented to all of our great openSUSE USERS! # # Copy and paste this text into a text file and save it in your home area, bin folder (~/bin) as the file findgrub # Once the file is saved, you must make the file executable using the terminal command: chmod +u ~/bin/findgrub # # current version version="2.2b" # default mountpoint mnt=/mnt # # Check to see if we are root # if [[ $UID -ne 0 ]]; then id -Gn | grep -q wheel || echo "Root User Permissions are required, Please Enter the ..." echo sudo $0 $1 exit 0 fi echo echo "Find Grub Version $version - Written for openSUSE Forums" echo function help { cat << EOFHELP $0 - description and help options: -h --help : show this help -k --kernel : look for linux kernels -w --writemenu : add boot entries to /boot/grub/men.lst -d --debug : print Win bootsectors to standard output EOFHELP exit } function Linux2LegacyGrub { eval `echo ${1:2} | sed 's|\(.\)|maj=\1;min=|;s|$|;|'` dev=${1:0:3} let min-- # parse /boot/grub/device.map if present if [ -f /boot/grub/device.map ] ; then # check if device.map uses disk/by-id syntax (as in openSUSE) if [ "x$(grep 'disk' /boot/grub/device.map)" != "x" ] ; then eval `eval $(awk '/\(hd/ { printf "echo -n \"%s \" ; readlink %s ;", $1, $2 }' /boot/grub/device.map) | sed 's|/\.\.|/dev|;s|\.\.||;s|/dev/||;s|(||;s|)||' | awk '{ printf "%s=%s;", $2, $1 }'` # assume device.map uses device name syntax (as in Fedora, Mandriva, Arch Linux) else eval `sed -n '/[sh]d/s|/dev/||p' /boot/grub/device.map | tr -d "()" | awk '{ printf "%s=%s;", $2, $1 }'` fi echo "(${!dev},$min)" # no device.map found else echo "(hd$(($(printf "%d\n" \'$maj) - 97)),$min)" fi } function chainloadEntry { if [ "${WRITEMENU}" ] ; then printf " - append boot entry to chainload Windows bootmanager on %s to /boot/grub/menu.lst\n" $1 cp /boot/grub/menu.lst{,.findgrub} cat << EOFWriteGrubEntry | sed '/^ *$/d' >> /boot/grub/menu.lst ###Don't change this comment - YaST2 identifier: Original name: WindowsBootLoader### title Windows on $1 rootnoverify $(Linux2LegacyGrub ${1#/dev/*}) $makeactive chainloader +1 EOFWriteGrubEntry else printf "\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\nYou can add the following entry to /boot/grub/menu.lst :\n" cat << EOFDisplayGrubEntry | sed '/^ *$/d' ###Don't change this comment - YaST2 identifier: Original name: WindowsBootLoader### title Windows on $1 rootnoverify $(Linux2LegacyGrub ${1#/dev/*}) $makeactive chainloader +1 EOFDisplayGrubEntry printf "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n" fi } function printbs { printf "\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n%s Bootsector\n---------------------------------------------------------------------------\n " $1 dd if=$1 bs=512 count=1 2>/dev/null | tr -cd "[:alnum:] [:space:]" printf " \n----------------------------------------------------------------------------\n" dd if=/dev/sda1 bs=512 count=1 2>/dev/null | od -x printf " \n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n" } function printptbl { printf "\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n%s Partition table\n---------------------------------------------------------------\n" $1 dd if=$1 bs=1 skip=446 count=64 2>/dev/null | od -x | head -4 printf " \n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n" } function searchkernel { pt=$1 unset kernels ismounted mount | grep -q "$pt " && ismounted=1 eval `blkid $pt | sed 's|.*: ||;s| |;|g'` if [ "$ismounted" ] ; then mp=`mount | grep "$pt " | awk '{ print $3 }'` if [ "$mp" == "/boot" -o "$mp" == "/" ] ; then kernels=`find /boot -type f -name "vmlinuz*"` fi else mount -t $TYPE $pt $mnt if [ -d /mnt/boot ] ; then kernels=`find $mnt/boot -type f -name "vmlinuz*"` else kernels=`find $mnt -maxdepth 1 -type f -name "vmlinuz*"` fi umount $mnt 2> /dev/null fi if [ "$kernels" ] ; then printf "\n~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n" for kern in $kernels ; do printf " --> kernel %-51s found in %s\n" ${kern##*/} $pt done printf "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n" fi } function findbootmgr { case $3 in 6|b|c|e) fs=vfat ;; 7) fs=ntfs;; esac mp=`mount | grep $1 | awk '{ print $3 }'` if [ "x$mp" == "x" ] ; then mp=$mnt mount | grep -q "$mp " && mp=/findgrub [ -d $mp ] || mkdir $mp mount -t $fs $1 $mp UNMOUNT=1 else unset UNMOUNT fi case $2 in bootmgr) find $mp -maxdepth 1 -iname "bootmgr" | grep -q -i "bootmgr" && { printf " --> Windows7/Vista Loader found in %s\n" $pt chainloadEntry $pt } ;; ntldr) find $mp -maxdepth 1 -iname "ntldr" | grep -q -i "ntldr" && { printf " --> Windows NT/2K/XP Loader found in %s\n" $pt chainloadEntry $pt } ;; esac if [ "$UNMOUNT" ] ; then umount $mp fi [ -d /findgrub ] && rmdir /findgrub } # some partition types with color x6=FAT16 ; c6='33;1m' x16="Hidden FAT16" ; c16='33;1m' xb=FAT32 ; cb='32;1m' xc=FAT32 ; cc='32;1m' xe=FAT32 ; ce='32;1m' x1b="Hidden FAT32" ; c1b='32;1m' x1c="Hidden FAT32" ; c1c='32;1m' x1e="Hidden FAT32" ; c1e='32;1m' x5=Extended ; c5='32;1m' xf=Extended ; cf='32;1m' x7=NTFS ; c7='34;1m' x17="Hidden NTFS" ; c17='31m' x27="Win Recovery" ; c27='31m' x82=swap ; c82='33m' x83=LINUX ; c83='36;1m' x8e="LINUX LVM" ; c8e='36;1m' xee=GPT ; cee='31m' xef=EFI ; cef='31m' xaf=HFS ; caf='35m' xa5=FreeBSD ; ca5='35m' xa6=OpenBSD ; ca6='35m' xa7="Next Step" ; ca7='35m' xa8=Darwin ; ca8='35m' xa9=NetBSD ; ca9='35m' x39=Plan9 ; c39='36m' x4d=QNX4 ; c4d='36m' x4e=QNX4 ; c4e='36m' x4f=QNX4 ; c4f='36m' x63="GNU HURD" ; c63='36m' x81=MINIX ; c81='36m' xbe="Solaris boot" ; cbe='36m' xbf="Solaris" ; cbf='36m' xeb="BeOS" ; ceb='36m' xfb="VMware VMFS" ; cfb='36m' xfc="VMware VMKCORE" ; cfc='36m' xfd="LINUX RAID AUTO" ; cfd='36m' # Main - BEGIN -------------------------- devs=(`fdisk -l 2>/dev/null | sed -n 's|^Disk \(/dev/[hs]d[a-z]\):.*|\1|p'`) case "$1" in -w|--writemenu) WRITEMENU=1 ; shift ;; -k|--kernel) SEARCHKERNEL=1 ; shift ;; -d|--debug) DEBUG=1 shift case "$1" in -n|--nocolor) COLOR=0 ;; esac ;; -h|--help) help ;; esac # look for GRUB signature in MBR, Linux(0x83) and Extended(0x05, 0x0f) partitions # skip EFI (0xee), swap (0x82) and BSD (0xa5, 0xa6, 0xa9) partitions # !!! deliberately skip Windows Recovery (0x27) partition # look for strings 'BOOTMGR' or 'NTLDR' in all other partitions bootsector and # if found mount the partition and search for files bootmgr or ntldr # in debug mode, output bootsector of NTFS and FAT partitons in ASCII and HEX # output partition table # get all partitions ids eval `fdisk -l 2>/dev/null | awk '/^\/dev/ { if ($2 == "*") ID = $6 ; else ID = $5 ; print $1"="ID";" }' | sed s'|/dev/||'` for dev in ${devs[*]} ; do if [ -b $dev ] ; then printf "\n - reading MBR on disk %-27s ..." "$dev" dd if=$dev bs=512 count=1 2> /dev/null | grep -q GRUB && { printf " --> Grub found in MBR" [ "$dev" == "/dev/sda" ] && makeactive=makeactive } for pt in `fdisk -l $dev 2>/dev/null | awk '/^\/dev/ { print $1 }'` ; do PT=$(basename $pt) fs=${!PT} f=x${fs} ; FS=${!f} if [ "$DEBUG" ] ; then case $fs in 6|b|c|e|7) printbs $pt ;; esac else case $fs in ee|af|a5|a6|a9|82|27) printf "\n - skiping partition %-11s %-15s" "$pt" "($FS)" ;; 5|f) printf "\n - reading bootsector %-11s %-15s ..." "$pt" "($FS)" dd if=$pt bs=512 count=1 2> /dev/null | grep -q GRUB && printf " --> Grub found in %s" $pt ;; 83) printf "\n - reading bootsector %-11s %-15s ..." "$pt" "($FS)" dd if=$pt bs=512 count=1 2> /dev/null | grep -q GRUB && printf " --> Grub found in %s" $pt [ "${SEARCHKERNEL}" ] && searchkernel $pt ;; *) printf "\n - searching partition %-11s %-15s ..." "$pt" "($FS)" dd if=$pt bs=512 count=1 2> /dev/null | grep -q NTLDR && findbootmgr $pt ntldr $fs dd if=$pt bs=512 count=1 2> /dev/null | grep -q BOOTMGR && findbootmgr $pt bootmgr $fs ;; esac fi done [ "$DEBUG" ] && printptbl $dev fi done printf "\n" [ -d /findgrub ] && rmdir /findgrub # Main - END --------------------------- exit 0 # End Of ScripT