/usr/sbin/ocs-restore-mbr is in clonezilla 3.21.13-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 | #!/bin/bash
# Reinstall executable code area (first 446 bytes in MBR)
# Ref: http://en.wikipedia.org/wiki/Master_boot_record
# Master Boot Record (MBR) is the 512-byte boot sector:
# 446 bytes (executable code area) + 64 bytes (table of primary partitions) + 2 bytes (MBR signature; # 0xAA55) = 512 bytes.
# However, some people also call executable code area (first 446 bytes in MBR) as MBR.
#
DRBL_SCRIPT_PATH="${DRBL_SCRIPT_PATH:-/usr/share/drbl}"
. $DRBL_SCRIPT_PATH/sbin/drbl-conf-functions
. /etc/drbl/drbl-ocs.conf
. $DRBL_SCRIPT_PATH/sbin/ocs-functions
# Load the config in ocs-live.conf. This is specially for Clonezilla live. It will overwrite some settings of /etc/drbl/drbl-ocs.conf, such as $DIA...
[ -e "/etc/ocs/ocs-live.conf" ] && . /etc/ocs/ocs-live.conf
# Setings
# By default we do not restore the prebuild mbr from syslinux.
restore_prebuild_mbr="no"
#
USAGE() {
echo "$ocs - To restore the MBR from an image to device"
echo "Usage:"
echo "To run $ocs:"
echo "$ocs [OPTION] IMAGE_NAME DEVICE"
echo "Options:"
echo "-p, --prebuild_mbr Use the prebuild bootloader from syslinux (For Windows only), not from the saved image"
echo "-or, --ocsroot DIR Specify DIR (absolute path) as directory ocsroot (i.e. overwrite the ocsroot assigned in drbl.conf)"
echo "IMAGE_NAME is the image dir name, not absolute path"
echo "DEVICE is the device name, e.g. sda, sda..."
echo "Ex:"
echo "To restore the the mbr saved in the image \"my-image\" to device sda, run:"
echo " $ocs my-image sda"
echo
} # end of USAGE
####################
### Main program ###
####################
ocs_file="$0"
ocs=`basename $ocs_file`
#
#
while [ $# -gt 0 ]; do
case "$1" in
-p|--prebuild_mbr)
restore_prebuild_mbr="yes"
shift;
;;
-or|--ocsroot)
# overwrite the ocsroot in drbl.conf
shift;
if [ -z "$(echo $1 |grep ^-.)" ]; then
# skip the -xx option, in case
ocsroot="$1"
shift;
fi
[ -z "$ocsroot" ] && USAGE && exit 1
;;
-*) echo "${0}: ${1}: invalid option" >&2
USAGE >& 2
exit 2 ;;
*) break ;;
esac
done
target_dir="$1"
shift
target_hd="$*"
# Fedora Core 1 seems to use dumb for rc1, we have to force it use linux.
# otherwise setterm will complain.
[ -z "$TERM" -o "$TERM" = "dumb" ] && TERM="linux"
echo "Setting the TERM as $TERM"
export TERM="$TERM"
#
check_if_root
ask_and_load_lang_set
if [ -z "$target_dir" ]; then
[ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
echo "No image was assigned!"
[ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
USAGE
echo "$msg_program_stop!"
exit 1
fi
if [ -z "$target_hd" ]; then
[ "$BOOTUP" = "color" ] && $SETCOLOR_FAILURE
echo "No destination disk was assigned!"
[ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
USAGE
echo "$msg_program_stop!"
exit 1
fi
#
target_dir_fullpath="$ocsroot/$target_dir"
for ihd in $target_hd; do
if `is_mbr_partitition_table_file $target_dir_fullpath/$(to_filename ${ihd})-pt.parted`; then
# Install MBR which displays a failure message on boot. This is for fault tolerance. If all the partitions are cloned successfully, the correcting MBR will be restored later. For more info, please check https://sourceforge.net/tracker/?func=detail&atid=671653&aid=2793248&group_id=115473
cat /usr/share/partclone/fail-mbr.bin > /dev/$ihd
if [ "$restore_prebuild_mbr" = "yes" ]; then
# For M$ Windows system, sometimes it will fail if we restore the mbr from the one we saved (Ex. hda-mbr). Another option is to use mbr.bin from syslinux
echo -n "Restoring the mbr.bin from syslinux to /dev/$ihd... "
cat $pxelinux_binsrc_dir/bios/mbr.bin > /dev/$ihd
echo "done."
else
echo -n "Restoring the first 446 bytes of MBR data, i.e. executable code area, for $ihd... "
dd if=$target_dir_fullpath/$(to_filename ${ihd})-mbr of=/dev/$ihd bs=446 count=1 &>/dev/null
echo "done."
fi
echo $msg_delimiter_star_line
else
[ "$BOOTUP" = "color" ] && $SETCOLOR_WARNING
echo "Not a MBR disk: $ihd"
echo "No need to restore the first 446 bytes of MBR data."
[ "$BOOTUP" = "color" ] && $SETCOLOR_NORMAL
exit 1
fi
done
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