usually in my experience that u need to put new hard drive in and start again to fix this
permantly as if you get it booted and it wont let you save or write to hard drive
if this isint that case thats great but click on hard drive and say zero room available
i tryed disc salv 2 and doesint work , and plus the hard drive be old as the hills as well
they just get to old and get unreliable, i just format another hard drive and then conect both after you get wb on your new hard drive and tranfer files from on to the other if
this is issue for you