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|
#!/bin/sh
set -e
_DEVICE="${1}"
shift
_DIRECTORY="/boot/extlinux"
# Exit if user is unprivileged
if [ "$(id -u)" -ne 0 ]
then
echo "E: need root privileges"
exit 1
fi
# Exit if user has not specified a device to install
if [ -z "${_DEVICE}" ]
then
echo "E: Usage: ${0} DEVICE"
exit 1
fi
# Exit if user has specified a non-existing device
if [ ! -e "${_DEVICE}" ]
then
echo "E: cannot access \"${_DEVICE}\": No such device"
exit 1
fi
# Exit if user has specified an invalid device
if [ ! -b "${_DEVICE}" ]
then
echo "E: cannot access \"${_DEVICE}\": No valid device"
exit 1
fi
# Checking extlinux directory
echo -n "P: Checking for EXTLINUX directory..."
# Creating extlinux directory
if [ ! -e "${_DIRECTORY}" ]
then
echo " not found."
echo -n "P: Creating EXTLINUX directory..."
mkdir -p "${_DIRECTORY}"
echo " done: ${_DIRECTORY}"
else
echo " found."
fi
# Searching syslinux MBR
if [ ! -e /usr/lib/extlinux/mbr.bin ]
then
echo "E: /usr/lib/extlinux/mbr.bin: No such file"
exit 1
fi
# Saving old MBR
echo -n "P: Saving old MBR..."
dd if="${_DEVICE}" of=/boot/mbr-$(basename "${_DEVICE}").old bs=466 count=1 2> /dev/null
echo " done: /boot/mbr-$(basename "${_DEVICE}").old"
# Writing syslinux MBR
echo -n "P: Writing new MBR..."
dd if=/usr/lib/extlinux/mbr.bin of="${_DEVICE}" bs=466 count=1 2> /dev/null
echo " done: ${_DEVICE}"
# Writing extlinux loader
echo "P: Installing EXTLINUX..."
extlinux --install "${_DIRECTORY}" ${@}
|
