think I found an answer to my question about the orange and white sata connector on some forum:
..........don't put the boot HDD or Optical drive on the funny coloured SATA ports. ASUS have rather wonderfully taken the shiny new ICH10R controller which is SATA only and added a pair of PATA channels with an add-on controller from Promise Corp. If you have anything plugged in to the PATA port, nothing will occur on the orange or white SATA connectors.
This is also something of a pet hate of mine - the use of the term IDE to describe PATA drives. Both SATA and PATA are IDE disks, it's just the interface on the back that makes them different. I think if people understood that, they might be more awake to realising that plugging something into a PATA port may well knock out a SATA drive and vice versa. Part one of the rant over.
And then, just make everything even more unclear, ASUS have added a further BIOS level function to the orange and white SATA ports. If you have nothing attached to the PATA connector and two drives attached to the orange and white SATA connectors, Drive XPert will attempt to back up the Orange SATA drive to the white SATA drive all by itself. This is sort of explained on page 3-40 of the manual, but I would have thought that it's only common sense to think 'Why am I using the only two oddly coloured SATA connectors, why don't I try the ones that are all the same colour, and three times as many of them?"
Anyhoo - plug all your SATA drives into RED ports and I think things will work much better for you. And all ranted out now, thank you!
My manual is pretty vague about these ports (vague, as far as a newb is concerned anyway)