I don't know what the user was doing last with the hard disk.(it is not mine)
He told me that it was working. In the evening he stop it and when in the morning he switch on his computer and try to access the disk this message appear.
I've got exactly the same message one month ago, but It was a mistake with the jumper position and the cable.
It is a new hard disk - on it there are 160GB of data and it is important not to lose them.
I don't know how the things with the disk are going. As soon as I have information you will all know it.