How to backup emmc tasks

jslee

We are a company in Korea that is considering an IoT gateway using the Orange Pi Compute Module 4 board.

I need help with two things.

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1) Back up the files worked on in emmc to the SD card using the “dd” command.
(sudo dd if=/dev/mmcblk0 of=/dev/sda)  - size 31G


2) Create an image of SD card data using a Linux PC.
(sudo dd if=/dev/sdb of=sems4_jammy_server_202406251642.img) - size 31G


3) Download the sems4_jammy_server_202406251642.img file to emmc using RKDevTool.exe.


The download stops in RKDevTool.exe because the file is large.


Can I back up the files I worked on in emmc in a smaller size and put them back in emmc?




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1) OV5647 camera module


If I connect the OV5647 module used in Raspberry Pi to cam1, will the driver be available immediately?
Or do I need to add the driver in the kernel?



help me please

jslee

I would like to ask for even a little help.
Please help..