Hallo John,
* john stokes <jstokes95.john@...9...> [2016-07-07 21:41:01 +0530]:
[…] [init] child "ahci_drv" announces service "Block" [init -> ahci_drv] Uncaught exception of type 'Genode::Xml_node::Nonexistent_sub_node' [init -> ahci_drv] Warning: abort called - thread: ep [init] virtual void Genode::Child_policy::exit(int): child "ahci_drv" exited with exit value 1 […]
The ahci_drv has no matching policy and because of a bug in its policy handling code (fixed on the current staging branch) aborts.
Your problem, however, is the missing policy for part_blk, e.g.:
<policy label="part_blk" device="0"/>
in the ahci_drv config. With the policy in place, part_blk should get access to the block device and your l4android component in return should get access to the partition.
Regards, Josef