08-22-2021, 05:24 AM 
		
	
	
		It's all about U-Boot.  U-Boot is what runs on your PBP when you turn it on, and what loads the operating system of your choice.  U-Boot is independent of the operating system you use.  Of course, every operating system bootable image we use comes with a U-Boot.  And it seems that some distrus, notably Manjaro (I think) will "update" your U-Boot whether you like it or not.  But otherwise, there's nothing stopping you from using the U-Boot that you have now, with a new operating system.
Now that you mention it, it does seem like the U-Boot that you have now does not allow you to boot from SD card. When I had it on my eMMC, I had to disable the eMMC to boot NetBSD.
	
	
Now that you mention it, it does seem like the U-Boot that you have now does not allow you to boot from SD card. When I had it on my eMMC, I had to disable the eMMC to boot NetBSD.
:wq
	
	



 
