If the delay is what you want to try :
You would be better of with a $1.99 Serial console from the Pine shop.
What exactly is on the eMMC ?
https://github.com/torvalds/linux/blob/m...meters.txt Wrote:rootdelay= : Delay (in seconds) to pause before attempting to mount the root filesystem
rootwait : Wait (indefinitely) for root device to show up. Useful for devices that are detected asynchronously (e.g. USB and MMC devices).
You would be better of with a $1.99 Serial console from the Pine shop.
What exactly is on the eMMC ?