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Steps for Multiboot support and

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Multi-SDCards Partitioning and Image Flashing automatically

Precondition

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for used SD Card

All the SD cards should be fully formatted. Use Disk tool to cleanup SD card data. Ignore Precondition steps if SD Card is fresh and empty 

Also, this method can be followed for single card multi boot flashing as well 

Deletion of partition using Disk tool in Ubuntu:

1) Select particular SD card from left hand side panel and click on '-' symbol of Disk tool

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3) Finally deleted all the partitions:

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Prerequisite Steps -  Preparing for flashing SD Cards

1) Keep all the below files in same location:

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3) Write all the partition names and their respective size in a text file (as created earlier as sd_part_size). Please don't copy the colon(: ) displayed at the end of the partition name and the word "GB"

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5) Once script execution gets over pull out each SD card and verify the multiboot feature on each of them, it should be working fine as expected (Refer to Switching to RDK-Video Image from RDK-Broadband section for steps). Each SD card will boot up with Broadband image and from there executing the script bank_video_switch.sh it can be moved to the Video image(which is per-stored in the extended partition of SD card) boot up. Each SD card will contain 4 partitions.

Note: We have  Have tested with 4 SD cards out of which 1 is 16Gb and rest of the 3 cards are 32GB each. Overall process took approximately 6min  6min  time to get completed. Host PC having 8GB RAM. 

           For Broad band image size around 300 MB and video image (thunder) size around 700 MB

           SD card size mentioned in input text file should always be in GB but with format as provided in the steps mentioned

Manual Procedure for Single SD card partitioning and image flashing

RDK- Broadband Image Flashing in SDcard Steps

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11.  R-Pi should boot up with video image. Ensure that the ethernet connection is available for R-Pi.

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.