Hello, I’m trying to boot the Xavier from SD card with reference to following URL because I want to share development environment. https://developer.download.nvidia.com/embedded/L4T/r31_Release_v1.0/BSP/l4t_quick_start_guide.txt I can flash image by “sudo ./flash.sh jetson-xavier mmcblk1p1”. Xavier show “Welcome”, but USB keyboard do not work. So I cannot assume working. I know that Xavier’s boot method is different from Jetson TX2, but I could not find a specific topic showing exactly where to change. What should I do to boot Xavier from SD card?

Hi hijikata_M, I can boot up from SD card, list steps for you reference: $ sudo mkfs.ext4 /dev/sd #Format your device with an Ext4 file system $ cd Linux_for_Tegra/rootfs/ $ sudo cp -a * && sync $ Unmount the disk and connect it to the target Tegra device $ sudo ./flash.sh jetson-xavier mmcblk1p1 Please check your sdcard format or try to format and copy again. Thanks!

I tried to boot Xavier by emmc. Then USB keyboard worked. So I think there is not hardware issure.

I thought that it would be okay to use a well-work image, I tried to back up image on emmc and flash the image to SD card with reference to following URL. https://elinux.org/Jetson/TX2_Cloning https://elinux.org/Boot_from_sd $ sudo ./flash.sh jetson-xavier mmcblk0p0 $ sudo ./flash.sh -r -k APP -G backup.img jetson-xavier mmcblk0p1 $ sudo cp backup.img.raw bootloader/system.img $ cd /Linux_for_Tegra/rootfs $ sudo cp -a * && sync Unplug SD card and plug-in SD card in Xavier $ sudo ./flash.sh -r -k APP jetson-xavier mmcblk1p1 I can boot Xavier by SDcard. Thank you.

Hi hijikata_M, Are steps in #13 working or not? I cannot tell your purpose. Please tell more about it.

Hi WayneWWW, I checked Xavier and know that it booted by emmc. So #13 is not working. I will try to set up from the beginning.

I set up by the following procedure. $ sudo tar xpf Jetson_Linux_R31.1.0_aarch64.tbz2 $ cd Linux_for_Tegra/rootfs/ $ sudo tar xpf …/…/Tegra_Linux_Sample-Root-Filesystem_R31.1.0_aarch64.tbz2 $ cd … $ sudo ./apply_binaries.sh $ cd ./rootfs $ sudo cp -a * && sync Unplug SD card and plug-in SD card in Xavier $ sudo ./flash.sh jetson-xavier mmcblk1p1 Is there any mistake?

Just a thought: The content of “rootfs/boot/” won’t be complete until at least one flash has occurred. However, I doubt this matters until U-Boot is added back in (cboot doesn’t look at rootfs “/boot” content).

Hi corolyuu, I tried to format and copy again. Then I can boot Xavier from SD card. I think that I could not boot because I did not do all the steps correctly. Thank you!

Hi carolyuu, I am able to boot from SDCARD but when I remove sd card from Jetson Xavier board then restart the board but not able to fall back to eMMC rootfs still searching for mmcblk1p1, not mmcblk0p1. Where I need to change for eMMC boot again or the only option to reflash the image to mmcblk0p1. Please help me with this. Thanks

I am not sure. Since cmdline only has one root device per time, I don’t think you could directly “fallback” to emmc boot.

Hi WayneWWW, I have some doubt regarding booting from sdcard. Is it possible to boot from sdcard without flash the device with mmcblk1p1 option? I have tested this in TX2 and able to work without any issue only I need to change root=/dev/mmcblk1p1 in L4T_Rootfs/boot/extlinux/extlinux.conf file. Is there any way in Xavier to change boot device to sdcard from eMMC without flashing the device with below command:- $ sudo ./flash.sh jetson-xavier mmcblk1p1 Thanks

How to Boot From SD Card?

Robotics & Edge Computing Jetson Systems Jetson AGX Xavier

carolyuu November 27, 2018, 8:22am 17

Hi hijikata_M,

I can boot up from SD card, list steps for you reference:

$ sudo mkfs.ext4 /dev/sd<port><device_number>   #Format your device with an Ext4 file system
$ cd Linux_for_Tegra/rootfs/
$ sudo cp -a * <mntpoint> && sync
$ Unmount the disk and connect it to the target Tegra device
$ sudo ./flash.sh jetson-xavier mmcblk1p1

Please check your sdcard format or try to format and copy again.
Thanks!

Booting Xavier AGX from SD card

How to copy rootfs in that NX-emmc witch boot up form SDMMC3

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