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This explains how to add, delete, modify, or rename partitions. For partition concepts and the Ptool workflow, see Manage partitions in Qualcomm Linux. Configuration files that define partitions for the UFS and eMMC devices are located at: To add a partition, add a row entry to this file. To remove a partition, delete the corresponding entry to remove the target partition from the set of images to be flashed. Many partitions are crucial for functionality. To understand the details of how this file plays a role in generating the partition table, see Manage partitions in Qualcomm Linux.

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Add a partition

To add a partition with name test in LUN0, add the following line to partitions.conf after the LUN0section: 
--partition --lun=0 --name=test --size=4096KB --type-guid=1B81F7E6-F50D-419B-A739-2AEFF8DA3335
This adds a 4 MB partition test to LUN0 and a GUID determined by you. This partition isn’t flashed with any image, but it’s available as a raw partition after the device boots up. Because this partition is added to LUN0, it shows up at either of the following options:
  • /dev/sda<N>
  • /dev/disk/by-partlabel/test
Note To reflect the changes in partitions.conf, update the QCOM_PARTITION_CONF. For more information, see Modify partition.

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Add a partition with a binary

  1. To add a partition with a binary to be flashed to the created partition with name test1 in LUN0, add the following line to partitions.conf after the LUN0 section: 
    --partition --lun=0 --name=test --size=4096KB --type-guid=1B81F7E6-F50D-419B-A739-2AEFF8DA3335 --filename=test1.bin
  2. Deploy the new test1.bin binary in build/tmp/deploy/images/rb3gen2-core-kit/$(image_name).

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Next steps