|In my experience you can't run hard drive manufacturer's diagnostics on a drive when it's in an external drive enclosure and connected by a USB connection. |
You have to either
- install it in the laptop again in order to test it
- or - if you're not sure whether there's something wrong with the laptop - your drive is probably IDE - you can buy an inexpensive laptop IDE (2.5") to desktop IDE (3.5") adapter, and connect it to a desktop computer's IDE data cable, and test the drive.
The drive has 4 pins (2 pairs of pins) for setting it to master or slave - it's set to cable select when no jumpers are installed - the jumpers are installed vertically.
If you install it on a data cable that has another drive connected to it, both drives must be set to cable select, or one must be set to master, the other to slave.
Some hard drives, e.g. many Western Digital models, have two ways they can be set to Master - e.g. Master, single, or Master, with slave - the latter setting should be used when two drives are on the same cable.
Check your hard drive with the manufacturer's diagnostics.
See the latter part of response 1 in this:
(thanks to Dan Penny for this link:)
Hard Drive Diagnostics Tools and Utilities
If you don't have a floppy drive, you can get a CD image diagnostic utility from most hard drive manufacturer's web sites, but obviously you would need to make a burned CD, preferably a CD-R for best compatibilty, on another computer if you need to.
If the hard drive itself tests okay, any data problems found can be fixed, one way or another.