Symptoms: Board does not boot Armbian from inserted SD card, but may boot other distributions (based on old/legacy u-boot). Following or similar output can be grabbed from the serial console: U-Boot SPL 2017.01-armbian (Feb 02 2017 - 03:04:04) DRAM: 2048 MiB Trying to boot from MMC1MMC: no card present spl: mmc init failed with error: -123 SPL: failed to boot from all boot devices ### ERROR ### Please RESET the board ### The key message here is "MMC: no card present"