Hard drive; error 2000-0142 status byte = 72

Hello,

I've run a self diagnostics of my XPS 430. And I found the following error code: 2000-0142, status byte = 72.

Now I've seen I should replace my hard drive? But what does status byte = 72 mean?? Can't read anything about it. Only saw status byte = 79.......

Can boot just fine (running Windows Vista). Do get errors in log book though. Event-id 9 and messages that the structure of the hard drive has been damaged....

Anyone know what status byte = 72 means, before I buy a new hard drive?

Thanks in advance!