My thanks to everyone for their advice. I now have the new drive working. I never knew about "diskmgmt.msc". This command worked a treat. I have been building computers now for about 5 years from parts donated and have never come accross this problem before. I wonder if it is something to do with the computer itself. It is a TIME computer with a KM400 motherboard. Thanks again for the invaluable help. JIm