Hi Marlene

Easiest way is generally just restart. That will fix it.
Other way to fix it is to undo all the cables, including power and connection 
cable. Then plug it back in.
Both should get it showing up again.

Kind regards
Daniel

Sent from my iPhone 5

---
Daniel Kerr
MacWizardry

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Email: <daniel AT macwizardry.com.au>
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On 11/08/2014, at 2:55 PM, Marlene Oostryck <[email protected]> wrote:

> Hello All
> 
> iMac 10.6.8 Snow Leopard
> 
> I was a bit sleepy and instead of dismounting a camera card, I dismounted my 
> 4TB WD Hard Drive connected to Time Machine.
> - My Book icon disappeared from the desktop.
> 
> I tried to access Time Machine to restore it but I get the message:
> "Your Time Machine backup disc can't be found".
> 
> 4TB WD - shows up in Disc Utility
> My Book - is greyed out.
> 
> Is there some simple way to remount my WD My Book?
> 
> (Lesson - don't work on a computer when you are sleepy!)
> 
> Any help would be appreciated.
> 
> Regards
> 
> Marlene Oostryck
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