Inquiry Regarding Jetson AGX Thor rootfs Cloning

Robotics & Edge Computing Jetson Systems Jetson Thor
1

Test Environment:

  • Jetson AGX Thor Dev-kit

  • JetPack 7.0

  • 32GB USB device

  • Ubuntu 22.04 Host PC

I have been following NVIDIA’s official guide ( Flashing Support for Jetson Thor — NVIDIA Jetson Linux Developer Guide )

for cloning rootfs with initrd, and encountered a few issues:

  1. On the Host PC, when executing:
./bootloader/mksparse --fillpattern=0 system.img.raw system.img

I received the error:

size of system.img.raw is not multiple of 4096

I resolved this by using the following script and was able to continue testing:

filesize=$(stat -c%s system.img.raw)
remainder=$((filesize % 4096))
if [ $remainder -ne 0 ]; then
    pad=$((4096 - remainder))
    dd if=/dev/zero bs=1 count=$pad >> system.img.raw
fi
  1. After flashing the image to the Jetson AGX Thor, the Debian packages appear correctly installed, but the files I had added under /home/<username> on the Host PC are missing.

If there is another setting I may have missed?

I would greatly appreciate your guidance on this matter.

Thank you.

3

Hi,

What is your original rootfs size?

Thanks

4

Thank you for your reply.
The original rootfs size is:

image

After cloning the image file, the full process is shown in the image below.

image
image1186×193 11.5 KB

I appreciate your support.

7

Is this still an issue to support? Any result can be shared?

8

Hi.

Cloning the rootfs with initrd still didn’t work,
so we eventually decided to use another method — backup and restore. This method worked successfully.

Additionally, we confirmed that the same issue occurs on the Jetson AGX Orin Dev-kit with JetPack 6 as well.
Anyway, thank you very much for your help and support.