I got this bogus error while running a quick restore cd on a Compaq PC. Apparently the disk was dirty in one little spot, and the drive couldn't read through that dirty spot. So it displayed this error message, which is a classic. See the attached file, post your comments on it. I had to take a picture of it with a digital camera pointed at the CRT, so I'm sorry for the wavy lines in it; tried to match the monitor refresh rate the best I could.