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Coomputer can't 'see' external HDD


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#1 PGHinBKK

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Posted 31 July 2015 - 03:13 AM

Hello, all. I have a HGST eternal HDD, and the computer cannot see it. When I open Device manager, and go down to 'Disk Drives', it lists the computer's internal HDD, another external HDD I ha connected to it via a USB port, and it also lists the HGST HDD. When I open that listing, I am told the unit is functioning properly, but when I go to 'Computer" I only see the internal HDD and the other HDD. I disconnected the other external HDD but there was still no recognition of the HGST drive

. I tried updating the driver software, but it says the installation of driver hardware was not successful. What should I try next?


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#2 gigawert

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Posted 01 August 2015 - 02:04 PM

You can make sure that the Plug and Play service is started in services.msc. If it's in Manual mode, it's OK.


John 3:16

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#3 JohnC_21

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Posted 01 August 2015 - 02:16 PM

Does the disk show in Disk Management when attached? 


Edited by JohnC_21, 01 August 2015 - 02:16 PM.


#4 gigawert

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Posted 01 August 2015 - 02:30 PM

Or Device Manager?


John 3:16

 "God loved the world so much that He gave His uniquely-sired Son, with the result that anyone who believes in Him would never perish but have eternal life."


#5 PGHinBKK

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Posted 01 August 2015 - 10:28 PM

From my initial post n this thread:  

 

When I open Device manager, and go down to 'Disk Drives', it lists the computer's internal HDD, another external HDD I ha connected to it via a USB port, and it also lists the HGST HDD. When I open that listing, I am told the unit is functioning properly,

 

I saw a tech at the mall where I purchased the unit use Disk Management, but I can't remember how to get to it.  I know how to get to Device manager, but how do I get to Disk Management?


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#6 JohnC_21

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Posted 02 August 2015 - 08:13 AM

Right Click Computer > Manage > Disk Management

 

What is your OS?



#7 PGHinBKK

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Posted 03 August 2015 - 06:37 AM

JohnC_21

 

   On Disk Manager, it only shows my two external HDDs, both 1TB, and my internal C: drive 500gb.

  I checked Device Manager again just now and I must have been mistaken the other day, because it is not showing up there either. Now when I pick it up, although the power lights are on, it does not seem to be running. This is a unit that I was given as a replacement for the HDD in my unit I'm on now, so it is a brand-new drive, but it seems dead. (I called the customer service here but CS in this country is a joke.) I'll stop this thread since I think the unit it is dead, so it's not going to show up in my computer.

But thanks again for the willingness to help.


Edited by PGHinBKK, 03 August 2015 - 06:37 AM.

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#8 JohnC_21

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Posted 03 August 2015 - 07:02 AM

It is easy to miss if no letter is assigned. You can verify if the disk is dead or not showing by typing CMD in the search box to get a command prompt and typing

 

Diskpart

list disk



#9 PGHinBKK

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Posted 05 August 2015 - 07:50 AM

The CMD brings up a C:\Windows\system32\CMD.exe  'little black window'

 

but I cannot list the commands Diskpart

                                                 List Disk   on the two separate lines the way you put them in the post. Is that the way they must be entered, or on one line with slashes, etc.  or is this little black window the wrong window?


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#10 JohnC_21

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Posted 05 August 2015 - 08:12 AM

Sorry I was not clear. Attach the USB enternal. Type CMD in the search box if you have Windows 7.

 

Diskpart   <enter>  This will bring up the UAC Window. Allow it. Then a new window will appear with a Diskpart prompt. Type

list disk     <enter>






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