My Book not showing up

When I woke up this morning my WD external HD (My book 1tb) was not showing up under My Computer. It shows in Disk Management as Drive 5 and unallocated.  I am also not able to assign a drive letter to it.  Can someone suggest a solution or fix?

It shows under device manager as working properly but obviously something is wrong.


Seems like a corrupted partition. You can try formatting the drive so you can use it again. However, this will delete all data stored on your drive.

How to partition and format a WD drive on Windows (8, 7, Vista, XP) and Mac OSX

It may be possible to still extract the data utilizing data recovery software. There are several kinds of Data Recovery software available. If you do a web search for Data Recovery it will yield plenty of data recovery software options.

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I did indeed format it but I am now having second thoughts about keeping it. Why it would bad that quickly bothers me…

Thanks for your help,