Where are the kernel and DTB located in xavier when the root file system is in sdcard?

If the root file system is in sdcard (by sudo ./flash.sh jetson-xavier mmcblk1p1), where are the kernel and DTB located? EMMC or SDcard?

In the chapter “BSP Customization” of “nvl4t_docs”, it is said that:

The kernel and DTB can be loaded from:
• SD card (formatted to GPT)
• USB drive (formatted to GPT)
• A network (via DHCP/TFTP)

Then I’m confused now.

Thanks.

hello zhuce_cgf,

here’s commands to list/check all the partitions.

ls -al /dev/disk/by-partlabel

Only the root file system goes to any external boot media. The other boot content prior to loading the operating system goes into partitions in eMMC.