These disks lived in an HP dv9000 laptop. Said machine with those disks had never taken a fall to the floor. The disks failed at different times, say, over a year apart. I've tried accessing them via this current laptop, an IBM T43 via usb connection. The boat's "ship's computer" is an HP s7727c with the 3.5" drive removed and a 500G 2.5" installed. I have had occasion to take out this 500G and put it into an external case then read/write with a usb connection via the T43.