Corrupted external hard drives


Thread Starter
Sep 30, 2014
I've collected a bunch of external hard drives over the years that no longer work. Some are big 2TB jobs that run from mains power, and a couple are smaller jobs that run off usb power. In each case, when I connect to my laptop I either get the dreaded "device not recognised" message, or the device shows in device manager as "unknown", and I can't view the files. I've tried all the usual tips such as plugging into different ports and different machines, restarting my laptop, uninstalling and reinstalling the device.

Is there anything else I can try ? I am ready to throw them in the bin, so I am open to anything including reformatting and losing existing files or taking them apart with a screwdriver.

For what its worth, the drives are:
Samsung portable 1TB
Samsung D3 Station 3TB
Touro mobile 1TB
Seagate Expansion 2TB (I've also got a working on of these)


Jun 27, 2014
Are the portable drives connected by a single USB port or a Y-USB port cable?
For connection to a laptop, it might be worth it to get a Y-cable and see if it is then recognized.

Have a read through this
there might be something there you haven't tried.

I have 8 external hard drives, all Western Digital. The oldest is huge and only holds 80GB. The other seven are portable and are 500 GB, 1TB and 2TB in size. So far, I haven't had any problems except with 1 drive. (Some of the images stored on it couldn't be read but other were fine. I suspect this 2TB drive has 2 platters and one of the two platters has a problem).

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