Bootloader takes a long time (10s) on BPI CM4

Banana Pi Amlogic design
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Hi, I found out that the CM4 starts the bootloader and it takes 10 seconds before it starts running the Linux OS. How can we shorten this time?

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If this is the Grub bootloader you could change the bootloader timeout setting of grub…

See: https://linuxhint.com/change-grub-timeout-linux/

EDIT: It seems after testing myself that the boot sequence times several seconds. When booting via SD-card. Because it first tries to boot from eMMC flash, then it will try to boot from SD-card. I think you can’t change this behavior.