Thanks for your info. At the moment the drive (I'm assuming that's what it is) is quiet unless the computer is tilted or lifted.
S.M.A.R.T. Status is still "Verified".
Is it probably throwing good effort after bad at the moment until I receive and run Disk Warrior?
Sorry for slight delay in responding. I have also been subjected to being "mysteriously" logged off the forum and was having problems getting back in until Cyn used her magic touch.
Thanks again. Regards. Mike