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| BrianG could you paste lsblk output from our device on which you have run script? as I understand currently running linux from emmc is kinda in work in progress status. i guess easiest way would be to boot kernel from sd card and specify that root is on emmc. 
 example
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 orangepi@OrangePi:~$ cat /boot/uEnv.txt
 console=tty0 console=ttyS0,115200n8 no_console_suspend
 kernel_filename=orangepi/uImage
 initrd_filename=initrd.img
 root=/dev/mmcblk0p2
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 /dev/mmcblk0p2 is emmc partition 2 where all linux stuff should be copied from their provided image
 
 
 
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