My system was running fine on eMMc with raspbian, but I messed up /boot/boot.ini
In panic, I rebooted the system, with a SD-card (raspbian) inserted, but now the system will not start up. All 3 leds are on, and all I see on the HDMI port is the startup logo. No text. It seems to try booting on eMMC. How can I force the M5 to boot the SD-card instead of eMMC, or how do I erase/disable eMMC without a system running?
I hope I did not brick my system!! All help welcome