There might be an error in the file called 'table', please also post its content to examine. Personal note: It might be easier to follow you and your proceedings if you keep it all in one thread, because there might be little things that add up to errors from step to step. Still valid: The easiest way to achieve a custom setup of the EMMC is by installing Backup-Menu and doing it from a Linux-Live-CD like in 'Solution #8' or in the chapter 'Using Gparted' in that wiki article you linked to.