[how to] flash bootloader and kernel on eMMC while root file system on a sd card?

The “To flash the bootloader and kernel” sector in official l4t 32.1 document use the "sudo ./flash.sh " command to flash bootloader and kernel, but that means flash the whole rootfs including bootloader and kernel.

Flash the kernel can use “sudo ./flash.sh -k kernel --image <user_path>/Image jetson-tx2 mmcblk0p1”, and the bootloader, I think, can use a command like “sudo ./flash.sh -k cpu-bootloader -L <user_path>/Image jetson-tx2 mmcblk0p1”. But how flash flash rootfs(not including kernel and bootloader) into specific partition.

garretzou,

If you want to flash some specific partitions for Nano, please refer to related section for TX1.