Hi, thanks for your reply. Unfortunately it did not help. System boot only if SD-Card inserted. If write image to emmc (/dev/mmcblk1), system boots from emmc, if image write to USB drive, and emmc clean system boot from USB. If SD-Card not present, board not init boot process, no any message on cons...

Hi! Board from subject wont boot from emmc. No any messages from debug UART. From SD-Card boot normally, /dev/mmcblk1boot0 and /dev/mmcblk1boot1 is empty. root@nanopiair:~# hexdump -C /dev/mmcblk1boot0 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 00400000 root@nanopi...