Peer Chen wrote:

Hard reset should work for MCP61 and 2.6.26 work fine on my MCP61 board,
I believe the failure is specific case.
Does this board work fine under windows? Switch the HDD or connecting
the HDD to other ports are also worth trying.

Sorry about the delay.  Can you please try to test one?  This one is
rather serious regression as devices fail detection and it's far better
to disable hardreset on all MCP61s if we can't determine which specific
ones are problematic.

Thank you.

-- 
tejun