How can I Build the VIM3L Android SD Card image

After Build the Android source code.
I got the super.img dtb.img userdata.img…
How can I change these img for one SD card img

Thanks :slight_smile:

@in32519l28 Android system does not support booting from SD card.

Thanks QAQ…
Because I had some problem on the fastboot…
So, I just want to know other solutions can replace fastboot.