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Partitions that use vbmeta_system can be found by looking at avb flag in fstab from boot ramdisk. --flags 2 makes the verification function of avb always return a positive result. --set_hashtree_disabled_flag builds the vbmeta images with the HASHTREE_DISABLED bit set and as a result they don't need to manually disable dm-verity via e.g. 'adb disable-verity'. The rest of the configuration is taken from https://source.android.com/devices/tech/ota/dynamic_partitions/implement#avb-configuration-changes Change-Id: I381feef8f6fefc8449ca50d85d704b67bcc8a77e