MHR wrote: > Google is not particularly informative on this subject - anyone know > more than general suggestions about dd, badblocks, etc.? This is my > boot and primary system disk (has been for some time), but the error > message is essentially meaningless (to me, right now). Download the manufacturer's tools and run a diagnostics on it, it will tell you the truth about what's going on. I wouldn't trust any generic OS tools over the manufacturer's tools, there was a discussion on this topic on this list I think not too long ago. The biggest gotcha with the vendor tools though is they are usually limited in the types of disk controllers they support. nate