[ubuntu] How to access files on external HDD that won't mount?

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http://ubuntuforums.org – Oh well, here we go. Undoubtedly a noobish question, please be gentle with me... Some time ago I bought a Fujitsu Siemens 500GB HDD. One day it stopped working. To be precise: I plug it in, the blue light comes on, and it goes click click whirr click click whirr click click whirr whirr whirr (repeat as necessary). I had most of the stuff on that drive backed up, so its malfunction was not too great a loss. I bought a new HDD and all continued as normal. But I have now decided I want to try and fix the Fujitsu Siemens drive, or at least retrieve what files are retrievable. The problem i (Hardware)