Thank you for your kind help? You opened up my eyes, I read some of the article you told me about and I think I have found the answer. I don't know how it happend but the drive was set to cable select. the drive has been formatted many times by me for my son and as worked fine before? so i cannot understand what has gone wrong. I new something was wrong because it took over an hour and half to format the drive before.now I have set the drive to what it should be> master It should be formatted very soon.
Once again thank you.