[Core-PX30-JD4] Problem with custom board boot state

时间的蝴蝶

You should have noticed that after flashing the firmware for the first time, the system will boot twice. On first boot, it formats the userdata partition with the user called  `[root@buildroot:/]#`. Then reboot, user called `[root@px30_4]#` .

I suspect there is a problem with your emmc. From the information, it's just too slow to format the userdata partition, nothing else.