#!/bin/bash

SECTORS=15269888
SECTOR_SIZE=512
OUTFILE=u7623-mbr.tmp
OUTFILE_MBR=u7623-mbr.img

dd if=/dev/zero of=$OUTFILE seek=$((SECTORS - 1)) bs=$SECTOR_SIZE count=1

parted -s -- u7623-mbr.tmp \
	unit s \
	mklabel msdos \
	mkpart primary fat32 69632 86016 \
	mkpart primary ext4 90112 -1

dd if=$OUTFILE of=$OUTFILE_MBR bs=512 count=1
rm $OUTFILE