Right, I've been trying to diagnose this.

With both drives connected, It only gets as far as the sick penguin screen

With just one drive connected it *sometimes* boots ok, but sometimes still fails

So, I'm guessing either a dry joint where the drive connector is on the main board (I *think* I see a crack on one of the joints, but maybe not) or a duff cable, or something else...

I'm going to try and drop it off to David some time in the week...

I'll just have to sing in the car for now