| 1 | #!/bin/bash␊ |
| 2 | ␊ |
| 3 | echo "==============================================="␊ |
| 4 | echo "Check Previous Chameleon: Will there be problems?"␊ |
| 5 | echo "***********************************************"␊ |
| 6 | ␊ |
| 7 | # Checks for another existing Chameleon installation on the same disk␊ |
| 8 | # and tries to make sure the user doesn't end up with an un-bootable␊ |
| 9 | # system due to having installed Chameleon previously elsewhere.␊ |
| 10 | ␊ |
| 11 | # Called from the Standard/postinstall and EFI/postinstall scripts␊ |
| 12 | # /Volumes/EFI should already be mounted before this is called.␊ |
| 13 | ␊ |
| 14 | # Receives targetDisk: for example, /dev/disk3.␊ |
| 15 | # Receives targetDeviceRaw: for example, /dev/rdisk3s1.␊ |
| 16 | # Receives targetDevice: Stores device number, for example /dev/disk2s1.␊ |
| 17 | # Receives installerVolume: Volume to write the installer log to.␊ |
| 18 | # Receives scriptDir: The location of the main script dir.␊ |
| 19 | ␊ |
| 20 | if [ "$#" -eq 5 ]; then␊ |
| 21 | ␉targetDisk="$1"␊ |
| 22 | ␉targetDeviceRaw="$2"␊ |
| 23 | ␉targetDevice="$3"␊ |
| 24 | ␉installerVolume="$4"␊ |
| 25 | ␉scriptDir="$5"␊ |
| 26 | ␉echo "DEBUG: passed argument for targetDisk = $targetDisk"␊ |
| 27 | ␉echo "DEBUG: passed argument for targetDeviceRaw = $targetDeviceRaw"␊ |
| 28 | ␉echo "DEBUG: passed argument for targetDevice = $targetDevice"␊ |
| 29 | ␉echo "DEBUG: passed argument for installerVolume = $installerVolume"␊ |
| 30 | ␉echo "DEBUG: passed argument for scriptDir = $scriptDir"␊ |
| 31 | else␊ |
| 32 | ␉echo "Error - wrong number of values passed"␊ |
| 33 | ␉exit 9␊ |
| 34 | fi␊ |
| 35 | ␊ |
| 36 | ␊ |
| 37 | # ===============================================␊ |
| 38 | # Prepare some vars␊ |
| 39 | # ===============================================␊ |
| 40 | sliceNumber=$( echo ${targetDeviceRaw#*disk*s} )␊ |
| 41 | ␊ |
| 42 | # strip slice from end␊ |
| 43 | targetDiskRawNoSlice=$( echo ${targetDeviceRaw%$sliceNumber} )␊ |
| 44 | ␊ |
| 45 | # Are there any other partitions on the disk?␊ |
| 46 | # How many actual partitions are there?␊ |
| 47 | numSlices=$(( $( diskutil list | grep $( echo ${targetDisk#/dev/} ) | sed -n '$=' ) -2 ))␊ |
| 48 | ␊ |
| 49 | ␊ |
| 50 | # ===============================================␊ |
| 51 | # Checking the disk for existing Chameleon installations␊ |
| 52 | # if there is more than one partition on the disk.␊ |
| 53 | # ===============================================␊ |
| 54 | if [ $numSlices -gt 1 ]; then ␊ |
| 55 | ␉"$scriptDir"InstallLog.sh "${installerVolume}" "Checking ${targetDisk#/dev/}."␊ |
| 56 | ␊ |
| 57 | ␉# Check the disk's MBR for existing stage 0 boot code (code from CheckDiskMicrocode.sh script)␊ |
| 58 | ␉stage0type=$( dd 2>/dev/null if="$targetDisk" count=3 bs=1 skip=105 | xxd | awk '{print $2$3}' )␊ |
| 59 | ␉if [ "${stage0type}" == "0a803c" ] || [ "${stage0type}" == "ee7505" ] || [ "${stage0type}" == "742b80" ]; then␊ |
| 60 | ␉␉stage0type=2␊ |
| 61 | ␉elif [ "${stage0type}" == "0b807c" ]; then␊ |
| 62 | ␉␉stage0type=1␊ |
| 63 | ␉fi␊ |
| 64 | ␉␊ |
| 65 | ␉#Scan all partitions for Chameleon code␊ |
| 66 | ␉cleanRun=1␊ |
| 67 | ␉for (( i=1; i <= $numSlices; i++ ));␊ |
| 68 | ␉do␊ |
| 69 | ␉␉if [ $stage0type == 1 ] || [ $stage0type == 2 ]; then␊ |
| 70 | ␉␉␉stagesFound=1␊ |
| 71 | ␉␉else␊ |
| 72 | ␉␉␉stagesFound=0␊ |
| 73 | ␉␉fi␊ |
| 74 | ␉␉stage1Existence="NONE"␊ |
| 75 | ␉␉stage2Existence=0␊ |
| 76 | ␉␉targetDiskRaw=$targetDiskRawNoSlice$i␊ |
| 77 | ␉␉␉␉␉␊ |
| 78 | ␉␉# Check for existence of a bootable partition boot sector containing either boot1h or boot1f32␊ |
| 79 | ␉␉boot1Search=$( dd 2>/dev/null if="$targetDiskRaw" count=1 | perl -ne '@a=split"";for(@a){printf"%02x",ord}' )␊ |
| 80 | ␉␉if [ "${boot1Search:0:16}" == "fa31c08ed0bcf0ff" ] && [ "${boot1Search:1020:2}" == "55" ]; then␊ |
| 81 | ␉␉␉(( stagesFound++ ))␊ |
| 82 | ␉␉␉stage1Existence="boot1h"␊ |
| 83 | ␉␉elif [ "${boot1Search:0:4}" == "e962" ] && [ "${boot1Search:180:12}" == "424f4f542020" ] && [ "${boot1Search:1020:2}" == "55" ]; then␊ |
| 84 | ␉␉␉(( stagesFound++ ))␊ |
| 85 | ␉␉␉stage1Existence="boot1f32"␊ |
| 86 | ␉␉fi␊ |
| 87 | ␉␉␊ |
| 88 | ␉␉# Check for existing stage 2 boot file.␊ |
| 89 | ␉␉# Include checking the EFI system partition if it exists and is mounted.␊ |
| 90 | ␉␉if [ -e "$( df | grep ${targetDisk}s${i} | awk '{ print $6 }' )"/boot ]; then␊ |
| 91 | ␉␉␉(( stagesFound++ ))␊ |
| 92 | ␉␉␉stage2Existence=1␊ |
| 93 | ␉␉fi␊ |
| 94 | ␉␉␉␉␉␊ |
| 95 | ␉␉if [ $stagesFound -ge 2 ] && [ "$stage1Existence" != "NONE" ] && [ $i -ne $sliceNumber ]; then␊ |
| 96 | ␉␉␉# There is previous Chameleon stage 1 code on a partition boot sector,␊ |
| 97 | ␉␉␉# and either a complete or incomplete installation (ie. boot0 or boot are missing).␊ |
| 98 | ␉␉␉␊ |
| 99 | ␉␉␉if [ $stagesFound == 3 ] && [ $i -lt $sliceNumber ]; then␊ |
| 100 | ␉␉␉␉# Exisitng installation found which will still be default.␊ |
| 101 | ␉␉␉␉message="************************** TAKE NOTE *****************************␊ |
| 102 | **** There is an existing Chameleon installation on $targetDiskRaw␊ |
| 103 | **** and that installation will still be the default loader as it's␊ |
| 104 | **** on an earlier partition. If you want this new installation on␊ |
| 105 | **** $installerVolume to be default then you will need to remove the␊ |
| 106 | **** boot file from $targetDiskRaw and re-run this installer.␊ |
| 107 | **************************************************************"␊ |
| 108 | ␉␉␉␉"$scriptDir"InstallLog.sh "${installerVolume}" "${message}"␊ |
| 109 | ␉␉␉fi␊ |
| 110 | ␉␉␉if [ $stagesFound == 3 ] && [ $i -gt $sliceNumber ]; then␊ |
| 111 | ␉␉␉␉# Existing installation found which will no longer be default.␊ |
| 112 | ␉␉␉␉message="NOTE: There is an existing Chameleon installation on $targetDiskRaw␊ |
| 113 | NOTE: but this installation on $targetDevice will be the default loader␊ |
| 114 | NOTE: because you're installing to an earlier partition on the disk."␊ |
| 115 | ␉␉␉␉"$scriptDir"InstallLog.sh "${installerVolume}" "${message}"␊ |
| 116 | ␉␉␉fi␊ |
| 117 | ␉␉␉␊ |
| 118 | ␉␉␉␊ |
| 119 | ␉␉␉# User could see a b1f:error or boot0:error if the following conditions are true:␊ |
| 120 | ␉␉␉# A) Boot0hfs, Boot0md or Boot0md (dmazar's Boot0workV2) is being used.␊ |
| 121 | ␉␉␉# B) The previous stage 1 code is on a lower partiton than the one being installed to now.␊ |
| 122 | ␉␉␉# C) boot is missing from that partition.␊ |
| 123 | ␊ |
| 124 | ␉␉␉if [ $stagesFound == 2 ] && [ $stage2Existence == 0 ]; then␊ |
| 125 | ␉␉␉␉# Exisitng boot0 and boot1 only found - missing boot␊ |
| 126 | ␉␉␉␉"$scriptDir"InstallLog.sh "${installerVolume}" "INFO: Found $stage1Existence installed to ${targetDisk}s${i}"␊ |
| 127 | ␉␉␉␉␉␉␉␊ |
| 128 | ␉␉␉␉# stage0type=2 is used to know if 'A' is true.␊ |
| 129 | ␉␉␉␉if [ $stage0type == 2 ]; then␊ |
| 130 | ␉␉␉␉␉# i = current slice we're checking, slicenumber = slice trying to install to.␊ |
| 131 | ␉␉␉␉␉if [ $i -lt $sliceNumber ]; then␊ |
| 132 | ␉␉␉␉␉␉"$scriptDir"InstallLog.sh "${installerVolume}" "WARN: Conditions point to the possibility of a boot failure"␊ |
| 133 | ␊ |
| 134 | ␉␉␉␉␉␉# Fix by making previous parition bootsector un-bootable␉␊ |
| 135 | ␉␉␉␉␉␉message="---␊ |
| 136 | FIX: Make ${targetDisk}s${i} boot sector un-bootable by changing byte 1FEh to 00.␊ |
| 137 | NOTE: Any Extra folder you had there will still be there. If you want to use␊ |
| 138 | NOTE: ${targetDisk}s${i} again as your boot partition then re-run this installer␊ |
| 139 | NOTE: selecting it as the target, ONLY choosing the 'Chameleon Bootloader' option␊ |
| 140 | NOTE: and NONE of the other options.␊ |
| 141 | ---"␊ |
| 142 | ␉␉␉␉␉␉"$scriptDir"InstallLog.sh "${installerVolume}" "${message}"␊ |
| 143 | ␉␉␉␉␉␉␊ |
| 144 | ␉␉␉␉␉␉# /Volumes/EFI needs unmounting before changing partition boot sector␊ |
| 145 | ␉␉␉␉␉␉if [ $i == 1 ]; then␊ |
| 146 | ␉␉␉␉␉␉␉umount /Volumes/EFI␊ |
| 147 | ␉␉␉␉␉␉else␊ |
| 148 | ␉␉␉␉␉␉␉diskutil unmount "${targetDisk}"s${i}␊ |
| 149 | ␉␉␉␉␉␉fi␊ |
| 150 | ␉␉␉␉␉␉␉␉␉␉␉␉␊ |
| 151 | ␉␉␉␉␉␉# Change Byte 01FExh to 00 (510 decimal)␊ |
| 152 | ␉␉␉␉␉␉# Same code can be used for HFS or FAT32␊ |
| 153 | ␉␉␉␉␉␉dd if=${targetDisk}s${i} count=1 bs=512 of=/tmp/originalBootSector␊ |
| 154 | ␉␉␉␉␉␉cp /tmp/originalBootSector /tmp/newBootSector␊ |
| 155 | ␉␉␉␉␉␉dd if="$scriptDir/patch" of=/tmp/newBootSector bs=1 count=1 seek=510 conv=notrunc␊ |
| 156 | ␉␉␉␉␉␉dd if=/tmp/newBootSector of=${targetDisk}s${i} count=1 bs=512␊ |
| 157 | ␉␉␉␉␉␉␊ |
| 158 | ␉␉␉␉␉␉# /Volumes/EFI needs re-mounting so EFI/postinstall script can use it.␊ |
| 159 | ␉␉␉␉␉␉# Don't check for a GPT as wouldn't have got here if it wasn't␊ |
| 160 | ␉␉␉␉␉␉if [ $i == 1 ]; then␊ |
| 161 | ␉␉␉␉␉␉␉"$scriptDir"MountESP.sh "${targetDisk}" "${installerVolume}" "${scriptDir}"␊ |
| 162 | ␉␉␉␉␉␉else␊ |
| 163 | ␉␉␉␉␉␉␉diskutil mount "${targetDisk}"s${i}␊ |
| 164 | ␉␉␉␉␉␉fi␊ |
| 165 | ␉␉␉␉␉␉␊ |
| 166 | ␉␉␉␉␉else␊ |
| 167 | ␉␉␉␉␉␉"$scriptDir"InstallLog.sh "${installerVolume}" "INFO: but won't interfere as you're installing to an earlier partition."␊ |
| 168 | ␉␉␉␉␉fi␊ |
| 169 | ␉␉␉␉elif [ $stage0type == 1 ]; then␊ |
| 170 | ␉␉␉␉␉# boot0 was found which looks for boot1 on the first active partition.␊ |
| 171 | ␉␉␉␉␉"$scriptDir"InstallLog.sh "${installerVolume}" "NOTE: so select to boot that partition (if used) with active flag."␊ |
| 172 | ␉␉␉␉#else␊ |
| 173 | ␉␉␉␉␉#echo "DEBUG: Boot0 not found"␊ |
| 174 | ␉␉␉␉fi␊ |
| 175 | ␉␉␉fi␊ |
| 176 | ␉␉else␊ |
| 177 | ␉␉␉(( cleanRun++ ))␊ |
| 178 | ␉␉fi␊ |
| 179 | ␉done␊ |
| 180 | ␉if [[ $cleanRun == $i ]]; then␊ |
| 181 | ␉␉"$scriptDir"InstallLog.sh "${installerVolume}" "Nothing found that could cause any problems."␊ |
| 182 | ␉fi␊ |
| 183 | else␊ |
| 184 | ␉"$scriptDir"InstallLog.sh "${installerVolume}" "Nothing to check as there's only one partition."␊ |
| 185 | fi␊ |
| 186 | ␊ |
| 187 | exit 0 |
