Not getting file system in rootfs

Hello ,

I have flashed linux kernel version 4.9 (L4T 32.4.4) Ubuntu 18.04 , in my Jetson NX SOM module carrier board.

Made some changes in tegra_defconfig , and trying to prepare sd card image, steps involved are:-

Build the Tegra_kernel
$export CROSS_COMPILE=/home/admin/*****/Toolchain/gcc-linaro-7.3.1-2018.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
$make ARCH=arm64 O=kernel_out tegra_defconfig
$make ARCH=arm64 O=kernel_out -j19

Image created for SD card
$sudo cp kernel_out/arch/arm64/boot/Image /home/admin//NEW_GIT//BSP/Linux_for_Tegra/kernel/Image

$sudo cp -r kernel_out/arch/arm64/boot/dts/* /home/admin//NEW_GIT//BSP/Linux_for_Tegra/kernel/dtb/

$ sudo make ARCH=arm64 O=kernel_out modules_install INSTALL_MOD_PATH=~/Vinay/VKSINGH_GIT//BSP/Linux_for_Tegra/rootfs/
make[1]: Entering directory '/home/admin/Vinay/VKSINGH_GIT/
arch/arm64/Makefile:49: LSE atomics not supported by binutils
INSTALL crypto/authenc.ko

But my rootfs is not having filesystem present
$ls BSP/Linux_for_Tegra/rootfs/
lib README.txt

What can be the possible reason and solution.

You have to download the rootfs and install it to the directory… default BSP only has empty rootfs.

Sir how to do that … What steps are missing from my side

Read the document first.


I found the Tegra_Linux_Sample-Root-Filesystem_R32.4.4_aarch64.tbz2 ,

But to install it , do i need to simply extract it or does it inlvove any installation steps.

The document has the answer to your question…

Sorry @WayneWWW , but i could not find the steps . Please help me in locating the steps involved.


Thanks @WayneWWW

I would like to share the steps , which might help others

The solution is
1.Download the latest L4T release package and sample file system for your Jetson developer kit from:

2.Enter these commands to untar the files and assemble the rootfs:
$ cd Linux_for_Tegra/rootfs/
$ sudo tar xpf …/…/${SAMPLE_FS_PACKAGE}
$ cd …
$ sudo ./

1 Like

Hello @WayneWWW ,

I have flashed linux kernel version 4.9 (L4T 32.4.4) Ubuntu 18.04 , in my Jetson NX SOM module carrier board.

Actually my aim is to reduce the power consumption of my Xavier NX dev kit. Currently The default mode is 10W (mode ID 5).

But my requirement is to reduce it further , and enable only and only just UART (console).
In order to do so , i commented many module in Tegra_defconfig file.Will this work .

Please help me , like how can i reduce the power consumption

You should file a new topic. Please always file new topic when you want to ask something new.

Helo @WayneWWW @kayccc

Sir i have already filed the new topic (Reduce my NX power consumption) . But not getting satisfactory solution. Please share your views on this