Suppose there are two arm boards, A and B. I want to copy the operating system of board A, including the data, and then install it on board B, so that board B is exactly the same as board A. What should I do?
Copying the operating system and data on Arm board A to Arm board B can be done through the following steps:
1. Connect Arm boards A and B to the same network or directly to the same computer.
2. Install and run a TFTP (Trivial File Transfer Protocol) server on Arm board A. TFTP server is a simple protocol used to transfer files on the network, you can use TFTP server to transfer the operating system and data of Arm board A.
3. Install and run a TFTP client on Arm board B. Many common Linux distributions already include a TFTP client, such as tftp-hpathe package in Ubuntu.
4. Use ddthe command to copy the entire disk image of Arm board A to the TFTP server. Execute the following command on Arm board A:
sudo dd if=/dev/mmcblk0 | gzip | sudo tee /srv/tftp/mydisk.img.gz >/dev/nullThis command compresses and writes the entire disk image of Arm board A to mydisk.img.gza file on the TFTP server.
Download the file from the TFTP server mydisk.img.gzand unzip it. Execute the following command on Arm board B:
sudo wget -O - tftp://<tftp_server_ip>/mydisk.img.gz | gunzip | sudo dd of=/dev/mmcblk0 bs=4M 5. Please <tftp_server_ip>replace with the IP address of the TFTP server.
6. When ddthe command is complete, power off and disconnect Arm board B, then restart it. Arm board B should now have the same OS and data as Arm board A.
Please note that before copying the disk image to another board, you should make sure that the board's hardware configuration and software environment are similar or identical. Otherwise, some problems may occur, such as driver incompatibility or failure to start, etc.