If you're having trouble, try using Norton PartitionMagic. I have had a great deal of success with it numerous times. Although you do have to buy it, there is probably a trial copy of it available on the internet for download. You could also take your hard drive to a separate computer (probably a mates) and see if you can access it there. If you can, copy over all the files, reformat and repartition everything, then put all your files back on your hard drive.