Hard disk not detecting

If the drive is spinning but not being seen it should be a fairly easy fix. But if it's not spinning which is a common trait of the Hitachi's it's an expensive recovery.

When you plug in the drive does the LED in the case light up? If it does hold the drive in 1 hand and plug it in again and see if you can feel it start to spin. [i]You'll feel a bit of movement of the case when you initially plug in.[/i]

If that happens the most likely thing is that you have been unplugging the USB Lead without Using the Safely Remove Option and have messed up the Partition Information on the Drive. Any Data Recovery Program will bring the data back. A couple of suggestions are

http://tinyurl.com/pfuhz

http://tinyurl.com/273ay5

http://tinyurl.com/rmvrv

http://tinyurl.com/yyk8cm

http://tinyurl.com/382vm

They are just a few and there are many others available. But it depends on your experience here as what would be better for you personally.

If the drive isn't spinning you need to send it to a Data Recovery House that can dismantle the drive and read directly off the platters. This requires a Class 1 Clean Room or at the very least a Lama Flow Cabinet. It's also quite expensive and the cost depends on how important the Data Contained on the drive is as the faster you need to recover the Data the more Expensive the Recovery is.

Col