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Introduction-Mulitboot
This page is dedicated for switching the images (broadband to video) specifically for techsummit-2019
1. Flash the Broadband image in SD card
sudo dd if=<RPIimage-sdimg> of=</dev/sdc> bs=4M Example: sudo dd if=rdk-generic-hybrid-refapp-thunder-image_default_20190829072513.rootfs.rpi-sdimg of=/dev/sdc bs=4M
2. Resizing and partition creation
3. Keep RDK-Video image in the host machine
4. Extracting the RDK-Video image into the extblock directory
sudo sh extract.sh <video-image file> For ex. sudo sh extract.sh rdk-generic-hybrid-refapp-thunder-image_default_20190924125426.rootfs.rpi-sdimg
After executing the above script, Linux kernel and RootFS of RDK-Video image would be present in the extblock directory
5. To Copy the RDK-Video image in Partition-P4
For ex. mkdir videomnt sudo mount /dev/sdb4 videomnt In above command, storage partition 4 will get mounted to videomnt directory
sudo cp -r extblock/v* videomnt/
6. Copy the vrootfs backup data into partition 4 storage bank, to ensure it will acts as video bank as well
sudo cp -r extblock/vrootfs_backup_data/* videomnt/
7. Copy the bank_broadband_switch.sh file to partition 4 as below
sudo cp bank_broadband_switch.sh videomnt/lib/rdk/
8. Unmount videomnt directory as below
sudo umount videomnt
9. Now copy broadband multi boot change scripts to broadband image as below
Place the script files rpi_sw_install1.sh rpi_sw_install.sh swupdate_utility.sh bank_image_switch.sh bank_video_switch.sh imageFlasher.sh in /lib/rdk path of broadband image by following the below scripts
#For ex. mkdir -p bbmnt sudo mount /dev/sdb2 bbmnt #In above command, storage partition 2 will get mounted to bbmnt directory # Now copy the broad band change scripts from host to broadband image rootfs in partition2 (/dev/sdb2) mounted to bbmnt as below sudo cp rpi_sw_install1.sh rpi_sw_install.sh swupdate_utility.sh bank_image_switch.sh bank_video_switch.sh imageFlasher.sh bbmnt/lib/rdk/ # Now unmount the bbmnt sudo umount bbmnt
10. Now Boot up the SD card in RPI-> it should come up with BB image in partition (P2)
11. Log into the R-Pi from Host PC execute the below command
ssh root@<RPI-Board IP>
12. To load the video image which is present in the storage execute the script bank_video_switch.sh
root@RaspberryPi-Gateway:/lib/rdk# sh bank_video_switch.sh
13. R-Pi should boot up with video image
NOTE:
Ensure that while mounting the SD card in host machine it may have different device names like /dev/sdc * and /dev/sdd * . Please check host machine accordingly while using device name.