I explained similar things in another post before. Please take a look first.
Re-Installing Ubuntu on JETSON-NANO-DEV-KIT with 16GB eMMC - #2 by WayneWWW
I explained similar things in another post before. Please take a look first.
Re-Installing Ubuntu on JETSON-NANO-DEV-KIT with 16GB eMMC - #2 by WayneWWW