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Introduction-Mulitboot

This page is dedicated for switching the images (broadband to video) specifically for techsummit-2019

RDK- Broadband Image Flashing in SDcard Steps

1. Flash the Broadband image in SD card

Image Flashing Command
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

RDK- Video Image Copying in SDcard Steps


3.  Keep RDK-Video image in the host machine
4. Extracting the RDK-Video image into the extblock directory

video data extract
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 

  •     Create mount directory and execute mount  for the partition 4 
video data extract
For ex. 
mkdir videomnt
sudo mount /dev/sdb4 videomnt

In above command, storage partition 4 will get mounted to videomnt directory
  • Copy the RDK-Video image which is present in the extblock
video data extract
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 

video data extract
sudo cp -r extblock/vrootfs_backup_data/* videomnt/

7. Copy the bank_broadband_switch.sh file to partition 4 as below

video data extract
sudo cp bank_broadband_switch.sh videomnt/lib/rdk/

8. Unmount videomnt directory as below

video data extract
sudo umount videomnt

Switching to RDK-Video Image from RDK-Broadband 

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

video data extract
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.

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