how to boot from emmc with SD data
How to boot from emmc with SD data
STEP 1. boot from SD
1a. bpi-copy xxx.img.zip #burn to emmc ;
1b. bpi-bootsel BPI_M2U_720P-emmc.img.gz /dev/mmcblk1 #auto download from github and burn to emmc;
1c. bpi-bootsel BPI-cleanboot-8k.img.gz /dev/mmcblk0 #auto download from github and burn to SD;
STEP 2. boot from emmc
2a. poweroff
2b, remove SD card
2c. poweron
2d. insert SD card
2e. fdisk /dev/mmcblk1 and mkfs -t ext4 /dev/mmcblk1p1