Changes

Normally the 0 is the boot device (from where you boot), if you use the microsd card for boot : /dev/mmcblk0 and the eMMC is the /dev/mmcblk1 but if you boot from the eMMC and insert the microsd card then the eMMC is /dev/mmcblk0 and the microsd card be /dev/mmcblk1<br>If you use the script for prepare the disk first be sure about what is you booting device and which one is your desired target.