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LaCie external drive won't mount

I'm trying to attach a 4 LaCie Quadra d2 hard drive on a laptop. The drive shows up under devices but does not mount as a drive in Windows 7. I've never seen this happen before.

What would prevent a drive from mounting?
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sthon
Asked:
sthon
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1 Solution
 
TMekeelCommented:
Is it the correct file structure?
Most people I know with Lacie drives are Mac users.  

If it's HFS+ it wont mount (if I remember correctly.)
Click start, type compmgmt.msc in the search box and hit enter.
Go to drive management and see if it's there.
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sthonAuthor Commented:
No, it's not there. Is there a way to reformat it for Windows when it doesn't show up in disk management?
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nobusCommented:
look in disk management and assign a drive letter
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noxchoGlobal Support CoordinatorCommented:
Take a screen shot of Windows Disk Management and post it here.
There are two possible causes:
1)The drive is formatted in non-Windows format.
2)The drive is Windows formatted but it does not mount automatically. In this case you need to enable in Registry - AutoMount. It is normally written NoAutomount with value -0. Sometimes it changes to 1 and then it will not mount automatically.
In HKLM\SYSTEM\Controlset001\Services\Mountmgr
And finally there is a third possible cause - the drive becomes not enough power and thus cannot be used by Disk Management.
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nobusCommented:
yes - that's why i always suggest using external drives with their own power supply, or lacking that - to use a POWERED USB hub like  :  http://www.belkin.com/IWCatProductPage.process?Product_Id=158910
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sthonAuthor Commented:
The drive was unformatted.  I found the drive in devices and formatted it. A dumb mistake. Thank you all for your input.
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noxchoGlobal Support CoordinatorCommented:
Unformatted means that it has only unallocated space or it was still in some kind of for at which Windows detected as unformatted?
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sthonAuthor Commented:
It was an obvious solution that I missed initially. I looked for complexity when simplicity was the answer.
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