A customer’s desktop PC wouldn’t boot.
It looked like the hard drive was toast, though it would spin up. When I closely examined the hard drive’s first few sectors back in the shop, I could see that one of the sectors in the MBR (master boot record) was damaged. Luckily, I could map out the bad sector and scan the remainder of the disk surface, which required days to complete. I found six damaged sectors, which I flagged as unusable. Luckily, of the six, only three were unreadable and contained no critical data. The drive was only a year old and out of warranty. Drives usually last much longer.
Is the quality of new hard drives declining, or is this just a freak?